Glad you posted. Yes, this all blows. I hear that and feel that.
Glad to know you have deleted those stupid apps they will only bring you down. I deleted my FB, Instagram, all of that Chit. I just don't want my nose rubbed in it and who knows, maybe she is doing it on pupose just to push your buttons. Don't give her that power man.
If I were you, I would harness all of the anger and bitterness into action - action for you. That would be good for you and who knows where it will lead you? Examples, anger is good at fueling workouts, etc... Channel some of this emotion that will bring your positive results for YOU.
See your kids, it's OK for them to see you are having a tough time, but let them see how a loving father handles chit that life throws. Show them how a real man handles adversity, with courage and confidence and love. They will notice and this will give them guidance for their older years when they are going through a crisis.
Plus playing with the kids is a great way to take off anger and refocuses your mind onto something else. Going to the park costs nothing, so does kicking a ball around, go to the library, play puzzles - so many things to do that don't cost anything. Do it for them and do it for you. Refocus your energy onto you and your kids. They need you.
You are stronger than what you think you are, now you just have to BELIEVE IT.