u/nottheintention

I’m posting this because I really need outside opinions from people who don't know us personally. I’ve changed some details because I don't want anyone who knows us to recognize the situation.
My husband and I have been together for most of our adult lives. We have been married for more than a decade and have children together.
Recently, I discovered that he had been talking to another woman. At first, I thought it was just one person, but when I confronted him and asked him to be completely honest with me, he admitted there were other women and other situations that I didn't know about.
One of the women was significantly younger than him, and from their conversations, it appeared that they had plans to meet in person. He insisted that there was more to the situation than what I was assuming, but at this point, I don't know what to believe anymore.
Then I found out about another woman who was connected to someone in our extended circle. My husband admitted that they had spent time together drinking. They were also in a private room at our house at one point. The other person's relative told me about this and said she wasn't sure whether anything physical happened between them.
My husband says nothing happened.
But that's the problem now. I don't know what is true and what isn't.
After confronting him, I left our house for a while and stayed with a family member because I needed space to think. I thought that being away from him would give me some clarity.
Instead, while I was gone, he went out drinking. Later, I found evidence that he had brought another woman back around our home and was being physically affectionate with her.
This happened after I had already confronted him about his cheating.
I honestly don't know how to process that.
At one point, I told him that I would try to forgive him. A big part of that decision was because of our children. We've been together for so long, and the thought of breaking apart our family scares me.
But now I'm having second thoughts.
I keep thinking about everything he has admitted to, everything I discovered myself, and everything I still don't know.
What scares me the most is that I don't even know if this is the complete truth. I feel like every time I learn something new, the story changes.
I'm struggling between wanting to save my marriage and wondering whether staying is just going to teach him that he can hurt me repeatedly and I'll eventually forgive him.
We've spent so much of our lives together that walking away feels almost impossible. But at the same time, I don't know how I'm supposed to rebuild trust when there have been multiple betrayals.
I'm not asking Reddit to tell me what I want to hear. I genuinely want honest opinions, especially from people who have been through infidelity.
If you were in my position, would you still try to save the marriage, or would you leave? And if you've stayed after multiple betrayals, were you ever actually able to trust your spouse again?