Sorry to post my shitty neofetch to this community
I use rooted LineageOS on my 4a 5G, though I do still have GApps on it. Next phone I buy I’m thinking I’ll give GrapheneOS a try. Leaving behind my rooted system level adblocking would be difficult for me though.
In regards to ad blocking. My solution isn’t as all encompassing as that, but for general web browsing, I use the Mull browser as you can install some addons like ublock and noscript. I’ll admit though if you’re looking to install advertisement heavy Play Store Apps though, I’d say maybe look into using a PiHole to adblock your home network?
I mostly just use my phone for/at work. I already have a server that could operate as a pihole at home, but my PC already blocks everything under the sun, so it’s not really needed.
I get most of my stuff off f-droid unless I don’t have any other choice, and use firefox with ublock+noscript on my phone as-is. But it is nice to not have to worry about getting ads in anything else when I do install an odd game or something, though.
What works for me is a pi-hole at home, a wireguard service on my (dd-wrt) router with the pi-hole functioning as dns server and my phone using wireguard as an always-on vpn.
All traffic on my phone is now routed through the pi-hole at home, which filters out all tracking, wherever I am.