That's true, Smokey. Not being able to exercise, at least to some extent, makes it VERY hard to lose weight.
Even a small amount of exercise does help. Walking around your house for example, can help.
Or sitting in a chair and lifting small weights (or something like cans of soup, if you don't have actual weights) can also help.
You can build up strength that way.
I don't know what your physical afflictions are that affect your ability to exercise. I also have several physical problems that affect what I can and can't do.
You have to be smart when it comes to these kinds of things. Building yourself up slowly worked for me. Especially after my open heart surgery. I couldn't walk 10 feet easily before that. I have worked my way up where now I can walk a couple miles at a time.
Of course being winter here, with the ice and all, I haven't been able to get outside much. Today it's melting, and I walked to the library to post here. About a half a mile each way.
I have to be VERY cautious, as I had the spinal fusion surgery, and if I fall I would be in GREAT danger.