All things I use, besides JavaScript on websites and firmware, is basically open source.
I am lucky to use open protocols for communication only, as when deleting Facebook my friends were willing to use Matrix with me.
I can do many many compromises.
But still, I have OnePlus 6T with mobile Linux and absolutely cannot switch now. I would love to, but working camera and some alternative to Organic Maps is a must I cannot jump around when Android is "just" fine now.