So which on of these are better for my pixel 7a if we consider these:

i dont care about leaving the bootloader unlocked

i want customization to my os as long as this is possible

i hate google so i dont want any google things or google spyware (i dont use any google service)

i need push notifications for some apps (maybe microg or sandboxed google play services)

i dont use esim or google pay so idc about these

i need A LOT of privacy and security to my data

i wanna use google camera as it is in stock rom but i dont want google spy shit. if i use a firewall would be ok?

Note: i can sacrifice locking the bootloader and customization for my privacy/security/not having spyware on my phone

Thanks in advance!