Whereabouts in Poland are you, I'm guessing you're able to work remotely... If you were in Warsaw, I would try and hook up with Alex Forrest, he was a late bloomer, only started taking proper action when he was 45, but it shows you, you can turn things around, it's never too late.

But yeah, sure, it's completely normal to strike up a conversation, and if you particularly like the look of the girl and her demeanor, there's no harm asking for her number and trying to set up a date. But I wouldn't jump in straight away and ask for the number, have a bit of a chat first, try and build a bit of rapport, otherwise your chances are going to be slimmer.