Default Xperia Play r800at need a lot of help!!!!!

Hi, im new to this website and I need some help fixing my major screwup. I thought I could install TrueAncestor 2.3.7 and it put me on bootloop. I read a post on here suggesting I flash a relock bootloader ftf file (bootloader was already locked) and so I did and it didn't do anything! I have 15 bucks in the bank so this is my only phone for a long time! If anyone can answer me to whether this is fixable and give stupid me steps on how to fix his phone he shouldn't have modified , I'd appreciate it a lot! Thank you.