I'm sorry you are going through this, and I'm sorry that you seem to believe that this is your fault.
It is not your fault.
Your wife has continuously disrespected you and (in my opinion) cheated on you. She is completely ignoring your constant forgiveness and pleas for respect, and for that, I don't see how this is going to get any better, barring a lot of marriage counselling and time. Even with that, who knows?
This is a shit situation for you, and you should take the time to decide if you want to keep going on like this, or if you would be happier letting her go and giving yourself the chance you deserve to find the right person for you. A person who won't say you play too many video games, but perhaps join you in those games. Someone you can trust entirely and stop having to wonder what she's doing while you're not looking.
Best of luck, I hope everything works out for you.