How "open-source" is your phone in %?

What I mean is how much do you use open-source software on these privacy disrespecting phones (Xiaomi, Samsung, etc).

For example I use these apps on my Redmi 13C: -Floris board as keyboard -Breezy as weather app -VLC, Vanilla and Kodi as media players -Fossify as voice recorder -SimpMusic instead of Spotify -Nekogram (Telegram client) -Organic maps instead of Google Maps -Sealnote notes -Persian calendar as calendar -FDroid as store -Jerboa and Dawn (Reddit client)

etc.

All of this is about 10% since I have 100+ apps.