You can try adguard on iOS. It’s an app that you buy as an extension for safari but the block lists are very good and you can enable DoH systemwide as well.
As someone who switched from Iphone to Android, Adguard is very poor compared to uBlock, and it was in fact one major reason (of several) why I switched. But now that Google is killing adblockers, I might just stop browsing the internet entirely.
Hopefully Firefox will keep support for manifest 2 for the foreseeable future since they also have their own extension "store". In Chromes extension store new downloads of Ublock Origin have already been disabled and existing installations are slowly being disabled as they roll out the changes. I'm still on Vivaldi, but will be switching to Firefox very soon.
The fact that Firefox has had a near-perfect ad blocker for years and years, and the internet has only got less usable without an ad blocker and it's still struggling to break 1% on mobile is just so strange to me. It should be marketing open goal. Especially as the biggest competition has a conflict of interest that prevents them ever doing ad block well, so they can't lose out to a pivot by Chrome.
If you root your android then I believe AdAway is still a fantastic option because of the custom filters. Non rooted you can get personalDNSfilter from f droid, same thing but via VPN
