Hey, so there is a show called all star laff-a-lympics which is only available fully on tubi. It is also available on amazon, but im pretty sure they dont have all of the episodes. Furthermore, tubi version is remastered - the quality is top notch, way better than on any dvd or any rip Ive seen so far. And to add to it - tubi is prettt unstable when it comes to longevity of they library. They had remastered pup named scooby doo which they deleted over night. So, it is worth ripping - how to do it? I tried streamfab but it only allowed me to download 3 episodes (and I had to run microsoft defender a couple of times since I used cracked version). Also, the show is not available in my country so I had to use vpn.
I have used youtube-dl with proton VPN and it works fine, I often have to use a US location to access a lot of stuff that Tubi doesn't offer in my country. You should be able to do the same.
some tubi contents are not drm protected so you can easily download them with yt-dlp as already mentioned.. If you are using firefox there is a drm (drm protected) icon next to https.