if you have x3 pro, you could also try divetos. its a linageos fork with more security. if you have the nfc, then you are out of luck.
instead of changing banks, change the phone and try grapheneos's google sandbox thing. i myself already gave up, have lineage and gapps installed, but i do block most of analitics with blokada. i also try to use foss as much as possible, but sometimes theres simply no alternative. in the end of the day, you need to reconsider if you really want to go with the full front assault, or just block most of the stuff.
you can use open source apps for youtube and reddit, you dont even need to register or watch any of the ads. however yoz get promoted posts that are upvoted by bots, pretty sure its true here as well.
still using 7z. less space, and easier to browse, since the operating system doesnt have to deal with all the files, easier for the cloud to tag. not caring about space makes the storage more expensive, even games are bigger now with little to none content.