Maps

OsmAnd: https://osmand.net

MAPS.ME: https://maps.me

Launchers

Lawnchair 2: https://lawnchair.app

Mail Client

K-9 Mail: https://k9mail.app

Chat Apps

Telgram: https://telegram.org

PLAY STORE replacement

F-Droid: https://f-droid.org/en

SIMPLE APPS (best THO)

Simple Gallery: https://github.com/SimpleMobileTools/Simple-Gallery

Simple Camara: https://github.com/SimpleMobileTools/Simple-Camera

Simple Calendar: https://github.com/SimpleMobileTools/Simple-Gallery

Simple Contacts: https://github.com/SimpleMobileTools/Simple-Contacts

Simple File Manager: https://github.com/SimpleMobileTools/Simple-File-Manager

Simple Notes: https://github.com/SimpleMobileTools/Simple-Notes

Simple Music Player: https://github.com/SimpleMobileTools/Simple-Music-Player