Just an addition: I couldn't move around so I wanted to create a dummy account on an old Android device however it asked for a phone number to complete the creation so it didn't worked. Later I remembered that I already had one from years ago. Had to guess a password but finally found it. That account doesn't have a phone number or any other identification. Tried that with having yt-dlp --cookies-from-browser firefox --limit-rate 5M --sleep-requests 1 -f "bestvideo[height<=1080]+bestaudio/best[height<=1080] these parameters, basically tried to mimic a streaming here. Because if I continue as usual, they probably would ban this account as well. Will see I guess. Gotta go continue to download my educational videos.

That's what I though at first but after resetting my modem and got a new IP from a different range, the result was still the same. So now I'm not sure. Every digit is different in this new IP, not even close. Though maybe range thing works differently for IPs.

Temp bans did happen time to time but they usually lifted after 6-12 hours at most. This one is persistent for days now. I suspect they know the every device in the household too so they know it's me even though the IP has changed.

Edit: I tried private window on Firefox to see if this is about ad-blockers, they serve me two ads and then the video is still unavailable. :)