B”H most people have happy marriages. Nobody will post, hey I have a great marriage!
That being said, a lot of marriags have issues that need ironing, you see a lot of those issues as questions in the CR.
Some marriages don’t work out. You see some of those in the CR as well.
It’s healthy and important for people to work out their differences. It’s not a reason to not want to get married. On the other hand, I heard from R. Shlomo Brevda ZT”L that when parents have a bad marriage it does affect the children. Find someone to be your mentor! I can say that my Rav has been instrumental in my Shalom Bayis. (Yes, people should ask their questions to their Rav and not to the CR!!)
Good luck!