I think I’m done…

I’ve never felt more unwanted in my life. My wife has failed to initiate anything for the past two years and when I do, it feels like I’m bothering her. We used to be extremely sexual, but it all seemed to screech to a halt. When she would be doing the dishes or something, I’d stroll up behind her and grab her butt and she would lean into it, now she just continues to scroll on her phone or whatever she’s doing without any reaction.
Recently, we had a 2 day stint where my in-laws watched our son and I got a little hopeful that maybe something might happen… nope. Not even an attempt… I’d give her smooches, rub her leg, all the things that would normally start something, and she would just go right back to her phone or not even react…
I’m fucken fed up. Everytime I try and bring it up, she always gets loud and try’s to say I’m just starting an argument. I’m not an unattractive guy but I don’t want to cheat and my hand is getting boring. Im starting to think if a girl shows interest in me, I won’t be able to stop myself because I miss the feeling of being wanted so much.
I’m starting to think the only way is to just leave but I don’t want to…