Do any of those knee support products actually help with a bone-on-bone problem?

I’ve been seeing ads for various knee supports and wraps and “knee sleeves” lately. Do they actually help?

I had knee surgery in my twenties that has now evolved into an unstable, crunchy bone-on-bone situation. I’m afraid of the knee going out on me. It could result in a fall and a lot of damage.

If any of those things is a good treatment for the condition, I would get it. But I don’t trust the hype and the wishful thinking.

Do you have any relevant knowledge or experience to share?