You can just connect a (local) Git repo to it and store your compose files over there. There should be even an auto-sync (if you’re into that kind of thing).

Seems to me YT is just blocking the instances so they have to move their servers constantly. Big or small instances, both get blocked every few days. Thankfully there are enough instances, so you can always hop. But it does require more intervention than Invidious, which doesn’t proxy your requests to Google.