I dont want to start a fight or anything like that, I have to decide between these 2 and cant figure out which is the best and why, mostly because if you ask on X they just start swearing to each other without giving any real explanation, can anyone help a person who want to embrace privacy and anonimity?
If you have a pixel I recommend graphene and if not I recommend calyx. Graphene has some lower-level security primitives and their sandboxing between profiles is very good. I recommend not installing Google Play Services on your main profile (ideally in none but you might not have that luxury).
Security and privacy require diving into the topic, though. You can still easily do non-secure, non-anonymous things in either case. Sometimes people even seem to do riskier things when they think their privacy tools are there, and end up being less private and secure as a result of not knowing how the threats work.