Welcome to the club! It looks like the other recommended solutions have a UI for browsing as well, which is cool. As it is my ytdl-sub feeds into a library for Emby so I personally don't need another UI, but it is tempting. Only issue I could see is the same one I had to fix: Some videos only had AV1 available, and support for AV1 encoding only begins at the very recent Intel Core Ultra and AMD 7040 CPUs. Without those even 720p playback is laggy af.. I have an RTX 3060 at my disposal for HW transcoding but who knows if those YouTube archiver/players support it
Edit: Just did some research, it seems that the other services don't have support for HW transcoding or multiple users. And they are much more resource-intensive than ytdl-sub + Emby