Also, how’s isolation on LineageOS for mobile apps? I think I’m getting to the point where I’m thinking of ditching Apple again
I would wholeheartedly recommend going for a Pixel with GrapheneOS. I have been an /e/OS user on a Fairphone for 5 years before reading a lot about GrapheneOS and switching to GrapheneOS. It's honestly so much better!
If you go from iPhone to GrapheneOS, you get better security. If you go from iPhone to anything else, you get worse (to extremely worse) security.
It's also a good proxy for "no results" but then at least you know there is no free app that does what you want just yet :)
Anyway that's what I use to get the proprietary government and other societally required apps, and while I'm not on Lineage right now, it's meant to work there