No worries! This setup ended up working better than I thought, and I’ve been using it as my primary way of interfacing with youtube.

Addressing the subscribing part; I had similar requirements, so I started subscribing via FreshRSS while using a custom theme to give it a YouTube-like experience.

I shared the setup a few month ago here: https://lemmy.world/post/21381606

Edit: One of the benefits of using selfhosted RSS with a web interface is that it is platform agnostic.