Other problems

-to get bottom navigation view in main activity use

BottomNavigationView bottomNavigationView = findViewById(R.id.main_bottomNav);

-to remove bottom navigation animation add app:labelVisibilityMode="labeled" in your layout's BottomNavigationView

-to change color of bottom Navigation View

add default and selected colors to your colors xml

    <color name="default_selection">#FFf44322</color>
    <color name="default_nav">#FF808080</color>

create a navigation_color xml that controls colors of the active and default

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true" android:color="@color/default_selection" />
    <item android:state_checked="false" android:color="@color/default_nav"/>
</selector>

-to remote selected icon font become bold set app:itemTextAppearanceActiveBoldEnabled to false

-to remove action bar in app Change your theme.xml DarkActionBar to NoActionBar

<style name="Theme.Adnroid517today" parent="Theme.MaterialComponents.DayNight.NoActionBar>

And remove any line of code in your activity that has something to do with the toolbar. Including the line

NavigationUI.setupActionBarWithNavController(this, navController);

-to change status bar color % background color to white and black add

<item name="android:windowLightStatusBar">true</item> 
```
to your theme
then add ```<item name="android:statusBarColor">@color/white</item>``` white here is just your pick for background

Android Retrofit