Yea try to uninstall the chrome WebView :) . You are using Firefox and chrome. Firefox do have a close connection to Google also telemetry. https://itsfoss.com/librewolf-vs-firefox/

Yea problem is however that using Firefox on Android is using Firefox and chromium WebView. Så twice the problems. Sticking to vanadium. No issues at all as far as I noticed regarding adblocking. Next phone will hopefully be a Linux one. If there ever is such a thing that works and matches mid-top level androids. Then it will be a Firefox based one (not the standard one as it is riddle with Google stuff)

Ublocks lists are available as hostlists as well. Yea Firefox for the PC , vanadium (chromium) for the phone. No problem running all of it as well , if you have a little bit of power to spare. Haven’t had any issues on adguard DNS plus proton adblock

I just use DNS or VPN for adblocking , no need for browser addons