Looks like yesterday Youtube simply stopped serving the format 22 (ytdl -f22, IIRC that was 480p video+audio) on all videos, so now anything that had this format selected as default is failing (@invidious). -f18 is still there (360p).
They're locking down on IPs which consume traffic like a bot/ alternate distribution platforms like Invidious instances. AFAIK the softwares itself isn't blocked. Please try and correct everyone you see on this forum who says otherwise
FreeTube streams from googlevideo. This app is a frontend for Invidious AFAICT. Different stuff. Streaming googlevideo directly is the only method that works properly on 1080p+. Also, this doesn't work.