OP,
I was young once. A very long (to you :) ) time ago.
I recognize your pain and your position as if it were yesterday.
Dearest, you need to work on yourself and your issues with anxiety.
This isn't about him. Or his family. It is about you.
You cannot control anyone except yourself. It really is your job in life to be independent, self contained and to be able to adequately care for yourself and your dd.
I went to therapy for two years in my early 20s to learn how to be the things that I suggest to you. During which time. I was broken, left and found a completely different type of man who loves me and is hands on. We've been together for 30 years now.
My heart broke when i was broken up with but it was the best thing that happened to me.
Our life hasn't been perfect. My mil hated me. But i have never doubted how much my dh loves me.
When you're loved, OP, he will want to be with you. He won't think of leaving you for 2 weeks. Your partner's not giving you what you need. But you aren't either.
Please try to conquer or at least subdue your anxiety. Work on yourself and take care of your daughter.
Seek professional help, if you need to. Try a few different people. But men who want to be with you ARE. Those who don't. Make lame excuses.
There's a big world with lots of good men. You need to work on yourself and love will find you.
Or not. It's up to you. But my heart showed up a year later. You deserve to be treated respectfully.