don’t need advice, just wondering about others experience

I’m solo poly 2.5 years now. I’ve really only dated married folks. Not by choice per se, but there aren’t a lot of us in my area. Anyhoo. I realized another one of my partners is no longer physically intimate with his spouse. So now I’ve had three of these relationships. 1st one: Didn’t know what I was doing. I’m still with him but his marriage is not healthy or intimate. I’m thinking of ending this one. 2nd one: I’m still learning, but this guy had been poly bombed and I was clearly his distraction from how unhappy he was about it. We ended things a year ago. He’s getting divorced now and is not poly. 3rd one: this is a nice healthy relationship. I always felt good about his relationship with my meta. It’s healthier than the other 2, but now I find out they aren’t intimate.

I’m not looking to do anything, but I’m just feeling how common poly or open relationships are an attempt to save or augment a marriage that’s less than ideal. I’m dating solo folks now, but I’m not having a ton of luck.

Tell me about similar situations. Looking for solidarity.