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Please help me in becoming a better Muslim

I know i dont have complete knowledge of Islam , and also i feel like i am not standing in a position to tell them what to do since i do soooo many bad deeds along praying 5 times a day and reading Quran.
I want to be a good muslim and be pure of all these sins but in this modern society with music all around evrywhere you go, and backbiting, and laughing , looking at guys etc etc when evryone else does it around me , it is soo hard for me to avoid it .
PLease tell me what to do im so confused. I just want to follow Islam in a good way but it is so hard with evryone else around me doing the opposite .