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.

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