I gave you a suggestion to help find new artists/bands, the research on songwriting is up to you, but I can tell you now there's a lot of bands where the front woman is writing

Both Spotify and apple music have massive playlists of female singers in the rock/metal genre, you need to stop looking at pop music if you want to find decent stuff

I'm in that situation right now with my OnePlus N10, the plan is to buy a second hand device that is supported by LineageOS

I second this, especially with Android you can breath new life into a phone by installing a custom ROM

Yes, you're blocks and language settings are applied in any app you use, including Sync