Seconding Stremio! Just had to install the Torrentio add-on and even my tech-challenged mom can use it on her Android TV with no problems. I also got her a RealDebrid account (9 EUR/6 months iirc, completely optional) so she doesn't have to deal with torrent seeds etc.
+1 for this comment. I got Stremio setup yesterday based on your post and the recommended add-ons, and it was insanely simple. I was able to get it all setup on my Samsung TV in like ~15 minutes.
Update ur providers . What i do is delete them then reinstall them. They did a repo update mooved stuff alot
If u need help troubleshooting reply again i dont mind!
Go to settings. Extensions. Delete all the repos u see
Then add a new one by writing megarepo exactly. Download it and u will see sub repos that appear. From there redownload all the providers u used to have. If u need more help their discord is great help too.