Position yourself as a video creator and post your videos also to Instagram (when possible) and to Vimeo. Seed free / back catalog episodes via a torrent. Run a mailing list announcing and discussing your videos, with some premium content for paying subscribers only. Maybe have an X / SkyBlue / mastodon feed with more compact announces, comments, and high-virality short clips from your longer videos.
Cross-link and cross-reference all the channels of your presence. Make your brand recognizable across the publishing methods. Gently prod people to touch more than one channel of your video distribution, just to get the most avid viewers acquainted with several.
Yes, this is significantly more work. It also may bring significantly more results if your videos are good. This gives you a much stronger assurance that your brand and your following will not be lost, should you lose access to YouTube / Instagram / Vimeo / X / whatever other platform. Commoditize your complement, as they say.
That's what PeerTube is supposed to be for. You can set up a PeerTube host yourself. Or there are some public PeerTube hosts that accept uploads. When people are watching your videos, the ones with good bandwidth are also hosting them for other users. The hosting site is just handling the original copy and coordinating the peers. (This isn't like Bittorrent; hosting is centralized but playout is distributed. When no one is watching, the only copy is on the original server.)
PeerTube really should be popular like WordPress, for self-hosted content. But it's not. Neither Google nor Bing indexes PeerTube sites, so there's no discovery. Few PeerTube videos have more than a handful of viewers. I use PeerTube for technical videos, to keep them ad-free, and it works fine for that low-volume application.
Here's the Blender 4.2 showcase reel on PeerTube.[1] It's a good demo. Will it overload if watched by many HN users? Please try.