[al_borland]

I mostly gave up on this. But I would say, a link isn’t enough if you want to keep them. Make your own archival copy. I can’t tell you how many articles I saved to read later were gone by the time I actually got around to wanting to read them. The same goes for YouTube videos. Some things I was able to track down on archive.org, but not everything.

[max_]

Is there something like archive.is but for YouTube Videos?

[al_borland]

I actually found several of the deleted YouTube videos on archive.org, but it was pretty hit or miss and was mostly the older ones.

For personal copies of videos I want to keep incase of deletion, I generally look to yt-dlp.

[vik0]

Using the wayback machine can work if you have the exact video link, but it's not guaranteed that they'll have it

You can occasionally find a torrent out there of some channels entire video log

Other than that, no

If you come across a video that you really want to save, just use ytdlp to download it