You can just use lineageOS with no Google apps. Multiple phones for rotation is good too.

Having numerous browsers helps, which I do on my google phone. You know it's working when you get an ad for a supermarket in a surprising language which is no where near any of your vpn or real locations.

Most people don't be needing to go back to notes they set on fire. I just want to make it difficult for the machine trying to figure out who's looking at all the cat pics.