Install Vinegar: https://apps.apple.com/ca/app/vinegar-tube-cleaner/id1591303229

Pulls the actual video file from YT, stripping ads, overlays, and anything else YT shoves into them. Literally a game changer on Apple devices.

use sideloadly https://sideloadly.io/ and download the ipa from here: https://github.com/arichorn/uYouPlusExtra once you set it up all you need is to literally open sideloadly once a week on your pc/mac and hit refresh while the iphone/ipad is connected to the same wifi. apple doesnt let you add apps for longer than week unless you pay to be a developer so a 30second job to refresh the app and ur done.

Not a standalone app but try piped

Vinegar is a safari extension that gives you premium’s features. I’m almost certain it can do at least 1080 if not higher.

If you’re willing to go through the pain of sideloading on iOS and you’re ok with giving a random app your Google account, uYou+ is pretty good.

Try sideloading uYou+

Sideload or jailbreak depending on device

LibreTube