So my girlfriend of 18 months just dumped 2 weeks before christmas, she said we needed a break so she can figured herself out and think about herself for awhile, she said she loves me but now she’s starting to love me more as a friend more,i did the first week begging, i have a feeling she wants to exprience her freshman year single like sleeping with other dudes, i wanna get back with her what should i do?

Brother there are WWWAAAAYYYY too many beautiful ladies out there to trip over just one.
Move on and have a FUN single life.
P.S. when she sees youve moved on,she will probably suddenly decide she wants you back. Dont do it,remind her that this was HER choice.
Go find another chick, and mess around with her ( not necessarily fuck her) flirt with her, make sure your ex knows about it.
Just be her bff and just hang out with her like be her friend but if she wants to like make out or kiss u then just say it depends how is acting to u or the flirting with u or other boys