Open Settings
Tap Apps or Apps & notifications
Select the app you want
Tap Storage & cache
Tap Clear cache
Repeat for other apps if needed
To clear browser cache, open the browser app
Open its menu
Tap History or Privacy
Tap Clear browsing data
Select Cached images and files
Tap Clear data or Clear
To clear system cache on some phones, turn off the phone
Boot into recovery mode
Select Wipe cache partition if available
Confirm the action
Restart the phone