Youtube Vanced: very nice app, you have everything: adblock, PiP, Google account sign in, background play.
Youtube Vanced has been dead for years.
You want Youtube ReVanced.
The downsides are you install YT Vanced from Vanced Manager
This is much easier than people make it out to be. You don't even need root. Just download the specific APK version from APK Mirror (there's a link within ReVanced Manager that opens a list of search results for you), patch the APK via ReVanced Manager's local storage method, then install the patched APK (just use the "Regular" method for installing).
Make sure you uninstall the stock Youtube app (or at least disable it within Android Settings).
there is a lot of fake sites with fake Vanced Manager apk
Or just go straight to their Github page.
In addition, I also get a lot of frozen videos and have to relaunch the app - not sure it it’s adblock problem or anything similar.
I've been using Revanced since back when it was still "Vanced". The only time I ever had that issue, it ended up being nothing more than a single toggle in Settings. I forget which setting it was, it's been a few years since then. Something about spoofing? IDK anymore. I've updated a few versions since then and it's not been an issue.