I’ve sent you a private message before, about these discussions, and I offer again, if you need help I’d like to offer myself for the position, you can already see what my opinions are on this subject in previous posts. Feel free to send me a message if you wanna chat before. Cheers.
As far as I remember adaway is the og adblock for android, it is available on f-droid and pretty much the only app that I used since ever, and one of the few reasons I still won’t let go of rooted phones, https://adaway.org/
On top of that I would recommend you to run your own DNS server with unbound, add to that pi-hole and wireguard and you have your own pi-hole set-up on any device you want.: https://docs.pi-hole.net/guides/vpn/wireguard/overview/