polish guys arent looking in my direction,maybe because im black.
Might be, but I think it's because they don't want to stare.
We don't really have many non-Caucasian people in Poland, mums will tell us not to stare when we see one. I know it sounds stupid, but many Poles will find themselves thinking "what if she/he thinks I'm staring?! well, in that case I'll simply stare at the floor".
Smile nicely and keep hopeing it'll encourage them :)