The real Da'wah to Islam is the character of a Muslim.
He (Shaithan) is extremely patient. He won't get you in one shot. He'll come at you and he'll put a little bit and a little bit and a little bit until he destroys your character.
You can't just pretend that the things you watch, and the things you hear, and the places you go will not have an impact on your character. They will.
Find better company, find company of people better than yourself so you be surrounded with those best in character and so you may learn something.