Second stremio. I use the torrentio addon without rd but always with vpns. It's a backup for me for when my main nas goes down so I don't want to pay for rd.
Hands down the best. I even have a full rack mounted server setup with Sonarr and Radarr that's full of content, but Stremio is so friggin easy. Especially useful for the stuff you will only ever watch once.
I have streamio + Torrentio + real debrid and works great. I pay for Amazon prime but prefer to watch series in the streamio since it doesn't drop the resolution ever.