Google is constantly making changes that break it, the developers fix them quickly... but if your distro doesn't keep the newest version in their repo then you'd have to install it from their git repo.

Generally they have a patch for any breaking changes within the day.

If you want to give it a try again, get mpv and yt-dlp installed in your system then activate from Freetube settings the external player button, which you'll be able to click from search or from a vid page

I use it consistently with few issues. Once in a while, usually on Thursdays (when it seems YT rolls out changes), something breaks, but the devs are quick to fix it. The last issue I experienced was when YT transitioned to SABR, and it was out for a day or two before they had things working again. I am at least perfectly capable of going without for a day once every two months.

It's also one of the projects I've used to learn more about how fixes are worked on in FOSS. I will typically run nightly builds also - I find it pretty cool to follow an issue and once they push a fix I can instantly grab that fresh build without waiting for it to be packaged.