Last time I checked with them https://peertube.wtf/ had their import script still working. The problem being: YouTube blocks IP ranges that seem suspicious to them, so as soon as you have any professional server, it tends to come with an IP from a range YT blocks, so the yt-dlp + autoimport feature of PeerTube won't work any more.

If you have your videos still as original files ready to upload, and just want an instance in general, or if downloading and uploading by hand isn't daunting to you - here's a good list for an overview - (here's also a Lemmyverse link for instance-agnostic access to the same post.)