The point of no contact here is to show I'm able to walk away. I'm not needy or clingy - my entire life doesn't revolve around her.
When she told you she felt "restricted" you should have walked away.
When she told you she didnt want monagamy, you should have walked away.
When it came to the point that you should take a break, you should have walked away.
When at a certain point you 2 were supposed to talk, and that day has passed and still no contact, you should have walked away.
You cant walk away.
I want to give it another try but do things differently, more on my terms.
You did things on your terms. This next "try" is you now wanting a chance to do things on HER terms to keep her. Its reactive. Its not your terms, its hers.
Thing is OP, you can go out with a hot chick now and post a flirty picture with her on your facebook for your "gf" to see. You can ignore her texts for a while, act busy and she'll prob come chasing back. You can post some fun snapchat stories and get her to chase you. But is this the relationship YOU want?
You are way too controlled by this chick. You know she has issues with monogamy. She's told you. Her friends have told you she has issues in relationships. But no, YOU want to change to suit her. YOU want to change to keep this going. One simple truth is, this girl isnt on a forum trying to salvage this relationship. She isnt racking her brain trying to figure out what the issue is. Everyone has told you the same basic truth: "Im not sure of monogamy" = other dicks. Its not rocket science
As Rc said
She's not the type that's emotionally mature enough to date exclusively OP. The signs were there, you just misinterpreted them for something positive. They were not.
Heck, chick wasnt mature enough to keep her word and hit you up when she was supposed to. And instead of seeing the simple truth, you're going to continue to hope.