Most of us learned the hard way and TBH knowing what I know now their were red flags all around my Xw that I ignored before we got married.
Good women will make it easy on their man. Those women have a high self esteem and will let you lead the way, make mistakes and grow. They are submissive, and won’t be full of drama. They won’t fight you, or argue with you. They will also let you know when your failing and give you an opportunity to course correct.
They won’t pull the BS that most of us dealt with. You won’t be blindsided and if they D you, you will know it is coming because they will want to work at before it gets to the point.
If I ever get married again what I mentioned above is probably at the top of my list. Obviously I have to be attracted but in 20 years when I am 66 looks won’t be as important.