In Poland such attacks are less likely than in France, or even than in Germany
For normal people it will not make any difference how you look like. A human is a human.
As long as you don't visit slum areas infested with pathos(from pathology) after 22:00 you're safe. The Polish are not ISIS.
Exactly. There is a lot of more dangerous countries and places in some other European countries than in Poland. Behave normally, as you would behave in Italy or Spain, and nothing bad should happen to you.
In smaller towns people don't often meet foreigners (although historic places should be an exception, they have tourists, and it's norrmal that there are always some foreigners among them), so they might be just interested of you (or... afraid, I have read about such a case in a local supermarket :) ), that's all.
And don't except that people in small towns will be speaking English (for sure some will be, but not many of them). The bigger the city, the better. But in this case, it's also more or less the same as in the countries like Italy or Spain.
Noone will attack you because you are muslim or look like a muslim. As I have said, some people (with limited minds) may be afraid of you, but nothing bad should happen.