Are Polish people Anti-LGBT like Russia and other Arab nations or they're supportive like Spain and Germany?
Yes. Majority of Poles do not support homosexuality. Gay marriage and adoption is illegal. If you are low key and do not flaunt your homosexuality you will be fine. If you do at most though you'll just get stares maybe some harassment but it isn't like the Arab world where gays are thrown off roofs, have their heads chopped off or thrown in prison for decades, which is kind of ironic due to many arab men preferring the company of young boys (chai boys as they're called) but that's another story....
In 2017, 56% do not support registered partnership, 64% do not support marriage, 84% do not support adoption.
38% would not accept a gay neighbor, while majority would not accept a gay teacher, childminder, MP, boss, coworker, priest, etc.
In Poland there is a saying - To jest Polska, nie Bruksela, tu sie pedalowania nie popiera (This is Poland, not Brussels, homosexuality is not supported here - but rhymes in Polish)