firefox beta with ublock.
if you use beta, you can install any extensions by adding them to an AMO extension collection.
also make sure to get some sort of dns ad blocker for blocking in-app ads/trackers and vendor tracking:
you have three options:
- Self-hosted: Pihole
- Cloud: NextDNS (this is what I'm using)
- Local: AdAway (drains battery unless you have root)