You sound exactly like the tens of doctors that misdiagnosed my aunt (who passed away through euthanasia after her symptoms got too bad to live with late last year).
I understand that the symptoms of ME/CFS might be similar to being obese/depressed or housebound, but the problem is that doctors often jump to that conclusion too quickly and don’t take efforts to diagnose ME/CFS leading to situations like my aunt’s. She was also obese and depressed and has been struggling with those symptoms for about 30 years and has constantly been misdiagnosed the entire time because doctors didn’t figure out that those were symptoms of ME/CFS and not two unrelated conditions coming from two different diagnoses.
Thanks to long-covid putting the symptoms of ME/CFS on the forefront lately, there’s finally been some much needed research into the disease and people like my aunt finally get the diagnosis they should have been getting many years ago.