The closest I came to cracking this was buying a used treadmill, a steam deck, and some third party joycons that were a little more ergonomic. Play games while walking. Lost 20lbs playing BG3 and another 10 beating Hades. Then life happened and that routine fell apart. But it worked pretty well. Just need to get back into it. Obviously not feasible for many due to the initial expensive or space requirements.