Friend bailed for concert and can't get a refund

I am a student and bought tickets to a concert for me and my friend and then she bailed on me, before paying me for her ticket. I don't want to go anymore and want my money back but ticketmaster doesn't let me resale for the price I bought them, only for an offer that is basically over 50% less money. I don't know what to do and I tried posting on instagram but no one wanted the tickets. There is exactly a month until the concert and I am freaking out. PLEASE HELP (also i am not trying to sell these tickets on this reddit, I just need advice as to what to do.)