Just talk with people with decent morals and positive vibes bro. Funny you asked this question i just went through this recently too with this big oak at my job. Luckily for me i give 2 fucks cuz he seemed kinda off to me and kinda ghetto anyway. I greeted him once and when he ignored me that was it for me lol. Every once awhile i catch him giving me looks or glances and I completely ignore it