Stop trying to get her back. You aren't letting go and that's why you're depressed. Stop reaching out too. It's weird and certainly isn't going to make her want you. You're just making yourself look weak and needy and women generally don't want that. It's just reality. Chasing women does not work. Allow yourself to be depressed and actually move on. Friends, hobbies, work, etc will all be a better outlet and will get you right again. That's my advice. Take it or leave it.