https://videos.trom.tf is actually an interesting peertube instance. They're more lose with their moderation but anything extreme like conspiracy theories and such will be removed. Being run by an educational project that has created many scientific books, videos, documentaries, etc, this instance is a source of many educational & scientific content.
Read this article to learn more about their moderation - https://www.tiotrom.com/2021/08/should-i-moderate-videos-trom-tf/
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.