I need help. I don't know if I should keep trying to get my girlfriend back or should I just leave it?

We'll need some more information than that. I'm assuming you two broke up? What were the reasons for the break up? Does she want to get back together as well? Please provide us with some more information.

Would you please supply more information?

Such as:
Ages of both of you,
How long you were together,
Why you broke up,
Who ended the relationship,
And anything else you think would help us give informed advice.