Edge has built-in AdBlock Plus, even on iOS.
And for those who wonder, you can actually install AdBlock Plus app that integrates with Safari. It's on the app store.
And since you can "Install" web apps with safari as home screen apps, you can create a YouTube app free of ads this way. Your welcome :)
I actually use Firefox app since it's the only decent browser with dark mode on iOS (albeit not flawless), alongside that YouTube webapp for videos.
I don't care too much about the small mobile ads, and setting Firefox to strict blocking blocks most of them anyway.