How to change the month of calendar

[ParkJongJoon7128]

If I click on the text with the text "<" and ">", I'm implementing the code to move on to the previous month and the next month.
In addition, if I click text "<" and ">", I'm trying to implement an automatic change in the days that matches the changed month as well as the previous month and the next month.
But I'm asking because it doesn't work out well. How can I modify the code?

var selectedTodo by remember { mutableStateOf<RToDoResponse?>(null) }

    val selectedDate = LocalDate.of(
        year.toInt(), month.toInt(), day.toInt()
    )

    var previousSelectedDate by remember { mutableStateOf(selectedDate) }

    val today = Clock.System.todayIn(currentSystemDefault())
    val displayedMonth = remember { mutableStateOf(today.month) }
    val displayedYear = remember { mutableStateOf(today.year) }
    val currentMonth = displayedMonth.value
    val currentYear = displayedYear.value
    val currentMonthIndex = currentMonth.value.minus(1)

                    Kalendar(
                        currentDay = null,
                        kalendarType = KalendarType.Firey,
                        kalendarHeaderTextKonfig = KalendarTextKonfig(
                            kalendarTextColor = Color.Black, kalendarTextSize = 22.sp
                        ),
                        kalendarColors = KalendarColors(color = List(12) {
                            KalendarColor(
                                backgroundColor = Color.White,
                                dayBackgroundColor = Color(0xFFFFDAB9),
                                headerTextColor = Color.Black
                            )
                        }),
                        daySelectionMode = DaySelectionMode.Single,
                        headerContent = { month, year ->
                            Row(
                                modifier = Modifier.padding(
                                    start = 20.dp,
                                    end = 20.dp,
                                    bottom = 16.dp
                                ),
                                verticalAlignment = Alignment.CenterVertically,
                                horizontalArrangement = Arrangement.Start
                            ) {
                                Image(
                                    modifier = Modifier.size(22.dp), painter = painterResource(
                                        id = R.drawable.headertextemogi
                                    ), contentDescription = null
                                )

                                Spacer(modifier = Modifier.width(4.dp))

                                Text(
                                    text = if (currentMonth.value.toString().length < 2) {
                                        "${currentYear}. 0${currentMonth.value}"
                                    } else {
                                        "${currentYear}. ${currentMonth.value}"
                                    },
                                    fontSize = 22.sp,
                                    lineHeight = 28.6.sp,
                                    fontWeight = FontWeight(700),
                                    color = Color(0xFF000000)
                                )

                                Spacer(modifier = Modifier.weight(1f))

                                Text(
                                    modifier = Modifier.clickable {
                                        displayedYear.value -= if (currentMonth == Month.JANUARY) 1 else 0
                                        displayedMonth.value -= 1
                                    },
                                    text = "<",
                                    fontSize = 22.sp,
                                    lineHeight = 28.6.sp,
                                    fontWeight = FontWeight(700),
                                    color = Color(0xFF000000)
                                )

                                Spacer(modifier = Modifier.padding(horizontal = 8.dp))

                                Text(
                                    modifier = Modifier.clickable {
                                        displayedYear.value -= if (currentMonth == Month.JANUARY) 1 else 0
                                        displayedMonth.value -= 1
                                    },
                                    text = ">",
                                    fontSize = 22.sp,
                                    lineHeight = 28.6.sp,
                                    fontWeight = FontWeight(700),
                                    color = Color(0xFF000000)
                                )
                            }
                        },
                        showLabel = true,
                        dayContent = { date: kotlinx.datetime.LocalDate ->
                            val dayOfWeek = calculateDay(
                                date.dayOfMonth,
                                displayedMonth.value,
                                displayedYear.value
                            ).dayOfWeek
                            Box(
                                modifier = Modifier
                                    .padding(10.dp)
                                    .size(36.dp)
                                    .background(
                                        color = if (selectedDate == date.toJavaLocalDate()) {
                                            Color(0xFFFFDAB9)
                                        } else if (previousSelectedDate == date.toJavaLocalDate()) {
                                            Color(0xffE9E9E9)
                                        } else {
                                            Color.White
                                        },
                                        CircleShape
                                    )
                                    .pointerInput(Unit) {
                                        detectTapGestures(onPress = {
                            }
                        }
                    )

@RequiresApi(Build.VERSION_CODES.O)
private fun calculateDay(
    day: Int,
    currentMonth: Month,
    currentYear: Int
): kotlinx.datetime.LocalDate {
    val monthValue = currentMonth.value.toString().padStart(2, '0')
    val dayValue = day.toString().padStart(2, '0')
    return "$currentYear-$monthValue-$dayValue".toLocalDate()
}

@RequiresApi(Build.VERSION_CODES.O)
private fun getFirstDayOfMonth(firstDayOfMonth: DayOfWeek) = -(firstDayOfMonth.value).minus(2)