many of the best apps I have are from f-droid...
Which ones? Maybe there's one or two I can check
BreezyWeather, DavX5, jtx Board, Shelter, Floccus, FediLab, UntrackMe, Keepass2Android, andOTP, OpenKeychain, PCAPDroid, AnkiDroid.

These are some good ones off the top of my head.

I love F-Droid and try to use apps from there whenever possible.

I did recently discover that andOTP is no longer maintained, though. I've switched to Aegis since.

https://github.com/andOTP/andOTP