Install Video DownloadHelper for Firefox. Open whatever you want to watch and copy it’s url from Video DownloadHelper. Now, either open that url in mpv (might require yt-dlp) or download it (I’d also recommend yt-dlp for this, since DownloadHelper sometimes embeds watermarks) and watch wherever
Fucking ad for a Spyware infested piece of shit
My parents use some, they spam my PCs fucking firewall logs like hell. They also regulary get silent updates which make them slower and slower and slower (which shouldn’t be possible because it’s freezing all the time)