I want to be a real Muslim again!?

Okay so i was born as a muslim but i have been going through a bad time ( mental problems) and the thing is im really young and i was born in Bangladesh but we moved to Sweden and everyone here is a little bit of well i don't know how to say it but slutty! and my mom gave up everything and came here for me and i just let her down and become a bad girl who was always out late used bad words and wearing skinny jeans dying my hair blue and i become a real punk and my mom is even ashamed of me! and the worst thing is that.....im a big cheater i cheat on everything i fool people on money as in once i was gonna buy new sneakers and i only payed half price and run away from there! And i also make a lot of scenes and i lie a lot and i hang out with bad boys and i know that they always look at me on '' another way then just a friend'' i go to concerts and litsen to bad music , and i also buy illegal things i ditch school and alot more... but i want to change that! I mean you wouldnt belive that im a muslim girl i mean im one of those weard odd girls that u see in the sub way but im also drop dead gorgeous.... naahh just kidding! but Just please help me i wanna change!