What about hosting your own PeerTube instance and hosting your own videos there?
You'll be in total control of your content and how long it lives.
I would if I could but I don't have the time nor resources to self host at the moment.
Usually is good to ask instance admins, for example on my instance I keep it for people I know though sign up are open. Usually is good to reach owners and let them know what type of content you would like to upload.
There's peertube.tv hosted by @stux@mastodon.social
They don't appear to have sign-ups open
Looks like makertube just opened up signups
Maybe TILVids.com
If it's primarily videos about making stuff, MakerTube.net. I recently confirmed with the admin that game devlogs are welcome there, and there are all kinds of musicians, artists, makers etc.
Tilvids is a curate list of edutainment. So you can reach out to them and they can get you added. share.tube seems to be general purpose. diode.zone is an open general purpose. peertube.tv is run by Stux that's been very active in supporting Fediverse platforms and you can ask them to join on their mastodon https://mstdn.social/@stux .
If none of those fit the bill you can always check the general instance list:
A free software to take back control of your videos
Peertube is an open, federated alternative to Youtube without advertising or tracking. On this site, you can find a good Peertube instance, with good rules, good moderation and most importantly a friendly community.