Advanced privacy - perhaps a bit too paranoid?

With all gates closed the phone, i.e. browser appears sluggish and almost useless.
Can anyone tell me which ‘gate’, (ip, position or trackers) is most critical to keep closed?

I am happy with all adverts blocked. How dangerous is it to not fake the ip-addresses?

Regain your privacy! Adopt /e/ the unGoogled mobile OS and online servicesphone