As Heliumfart said, music works well. Even if you’re not musically inclined you can get a small midi keyboard and bash at it using some free software, is very accessible nowadays! (Plenty of YouTube tutorials, I use reaper but plenty of other free tools to try). As far as working out goes, I lacked the motivation too, but then got a couple of dumbbells and would do some small movements while watching movies or shows at home. It’s slow progress but eventually gets to the point that you enjoy it. You’re already sat there watching TV, so this is just adding one small thing into that. I do feel more motivated after moving a little, so maybe that would work for you.