Thinking of leaving my wife (32m)

My wife and I have been together for 7 years. We had a really strong beginning and when moved in together things were rocky at first but I popped the question so things got a lot better, I thought.

Flash forward to us now. I'm 32 she is 30. We own a house. We have two cats, and a dog. We unable to have children sadly. This didn't put a huge strain on our marriage, in case you are wondering. But yeah the American dream.

I can't bring this up to her and have a converation because If I ask her about anything she doing wrong she cries and deflects. she keeps on saying to me she can't be honest because when she is I get mad. Which is true. But I think it's normal emotion for what I have found out this week. (I do give her credit for telling me this and even thanked her for honesty after I calmed down and stopped being a sarcastic asshole. Which is my default when Im mad.)

-she told me when we were engaged she wrote a letter she "didn't send" quotes because who the hell knows if she did or not. She wrote him because he was getting married. Didn't explain the rwat of the letter. She just said that the last line said: if you ever break things off with your wife you know where to find me.

Also did somelight gas lighting. She says it was on flash drive that had nsfw pictures on it. When I told her I didn't think she would be dumb enough to keep a flash drive with nudes of her on them. Since she was saying it was, (God even writting this makes me realize how much bullshit it was) in case he sends them to people, she wants to make sure they aren't hers or something. I called her on it and then the tears came

Either way that was bullshit. She has been caught gas lighting so many times she knows just says she is working on it. Same goes for the lies that don't fall into that category.

I could go on and on about the lies she has told, but I'd rather just ask if I should leave her because she was miserable when I proposed. Not that I proposed but more she didn't like her life at that time. She hung out with a guy then behind my back during the same time frame and now this letter thing. I should say she also told me after we were married that she was going to break up with me a week after I did. (I proposed on our anniversary, incase your wondering why she waited.)

But another major thing is since I've been working on my mental health, I found out a lot about manipulation. So now I know she has been doing that since day one.

TLDR: wife was unhappy when I asked her to marry me. She met a guy behind my back during this time and also wrote her ex a letter asking him to dump his fiancee and be with her. I've caught her gas lighting and lying about everything. Including boundaries I set. And she is very manipulative.

So should I leave my wife?