As Google/YouTube seems to be up to new shenanigans (https://mastodon.bentasker.co.uk/@ben/111442472204337543), a reminder that the Fediverse has an alternative called PeerTube:
➡️ https://fedi.tips/peertube-video-hosting-on-the-fediverse/
You can follow and interact with PeerTube accounts/videos entirely within Mastodon, you only need to join PeerTube if you want to publish videos or playlists.
If you do want to publish videos, there's a guide here:
➡️ https://fedi.tips/how-to-publish-videos-and-audio-on-peertube/
If you want to see an example of PeerTube in action: