"What these surgeons and hospitals don’t tell you…. You are never the same and will always have swelling and sone degree of pain"

This is simply not true. Every patient and every knee is different of course. I have found that if PT is done pre surgery, and aggressively post surgery, the results of a TKR can be life changing.

I was bone on bone in both knees with swelling and pain. Post TKR, I have no swelling and no pain. I'm in the gym 6 or 7 days a week and do rowing and spinning for cardio. The only exercises I can't do are impact-related - so no running, BB, tennis, pickle ball - and they are not missed. I'm a 69 y/o male. I do agree that losing weight if necessary is a huge benefit. And smokers should stop, but that's no revelation.

I take it you have had a bad experience and if that's true I am sorry for you. But please don't post absolutes about the results of knee or any other joint replacement. Done properly, they change lives for the better.