I exclusively use Freetube for my Youtube needs. It is great when it works. Sometimes you have to find the right Invidious instance for it to work properly. A few times videos play at 720p. I have also noticed search failing for specific terms sometimes - for example "machine learning". I don't know if it is a bug or blacklisted words/phrases.

These are a few reality checks highlighting it isn't a perfect experience all the time, but I will be damned if go back to a vanilla Youtube interface after having gotten used to Invidious and then Peertube.

The upsides are less fluff that is recommended, you control your own feed with the videos from the channels you subscribe to, no ads, sponsorblock, and I guess more privacy.