1
Open source android notes app
(lemmy.world)
For a local device note app I will recommend Omni Notes. Its available on F-Droid. Omni Notes support tagging.
For a note app that can be synced to many cloud providers or by using Syncthing is Joplin. It also works as a local device note app too. Supports notebooks which act as categories/folders and tagging and has E2EE for sycning notes.
https://f-droid.org/en/packages/it.feio.android.omninotes.foss/
Joplin +1
Lemmy community for degoogling.
Google is evil and there are alternative services you can use which respect your privacy, which are more censorship resistant and can even be more secure.