Focus on work first

Right now, find a job that sponsors you for green card.
And enjoy dating at the same time.  If "dating fatigue" shows up, take a break.
Most important, enjoy your life.
I mean, finding a man is important.  For me, my life is not complete without my child.  And in order to have a child of your own, you do need to get a man first (I know there are other methods, but I am not discussing that topic for now). 
If you take men too seriously, you hurt yourself.  You are so "shi zai" that I really don't want you to get hurt again and again.