In my opinion, the adoption is quite weak. Unfortunately, in my area I haven't heard anything about bitcoin. Maybe because I don't live in any city. Under Polish tweets I often see people writing that bitcoin is a scam. As for the word bitcoin, most young people know what it is, but don't know how it works and don't use it.

As for the sites, I'm unlikely to mention more than these 2 than someone has given here. Personally, I do not follow the Polish community, but sometimes I watch a youtube video, usually related to the crypto market. I do not watch any bitcoin maxi but people who love bitcoin but not limited to it.