iOS allows content blockers now, at least for Safari. While it’s not quite as good, it makes the Internet usable again. Firefox focus’s content blocker has been sufficient for me, as a specific recommendation.

They have supported ad blocking extensions for literally years. Though, these days, I'm 100% Wireguarded to my house when away and everything goes through Pihole anyways.

I find Brave's built in ad blocker pretty good. It's the only way I consume YouTube on iOS as it generally is effective as blocking ads and actively works around Google's preventing background playback.

iOS 15 (releasing within the next week or so) adds extension support for mobile safari. I’ve been using Wipr with it on the beta and it’s great

ios 15 has browser extensions, though that won't bring ublock origin to ios, or safari.

I deal with it using a dns profile, and content blocking extensions.