Is it normal i try very hard to seem american?

I moved from Russia to USA with my brother and I don't think anyone likes me here. I am 6'5 23 year old male and have very heavy accent. I like USA very much and citizens are very kind to each other but neighbors call police on me every week say I look suspicious or they think I rob them and bosses don't like my tattoos. I was taught to not smile or give greet to people but Americans like to do that very much so I try to be nice too. I met very nice American boy who teaches me to speak clearer if I buy him dinner. He is very loud and protests very much but is kind to me so I like him.

I don't talk to people because I hate my accent and sometimes ignore people so to not show accent. I wrap my arms and put makeup on my cheek to cover tattoos. I work out a lot and dress in Hollister and Under Armour. My brother does not bother to learn English and he fights police when they come. I very want Americans to like me but am not making friends from insecurities. So very sorry for grammar I start English 11 months ago.