Simplest native AdBlock solution, since we only see ads in the browser (works for me on C2):
Edit DoH settings in about:config.
- Enter about:config in address bar, swipe to accept
- Scroll all the way down to network.trr.default_provider_uri
- Replace the cloudflare DNS url with one from this list https://github.com/curl/curl/wiki/DNS-over-HTTPS
- Scroll further down to network.trr.mode
- Set it to 3 (always use DoH)
- Tap accept
Then test at some AdBlock Test Site If it works.