You're not an expert on the matter
Nor are you. Legal residency is required; citizenship is not. Fortunately I pass both of those hurdles however I see no reason to possess a firearm in Poland.
Having a criminal record rightly however bars people from holding a firearms licence.
It is quite common for people from the UK to come and use the ranges, for the experience of it,
How common?
When you do not understand how fun.shooting can be as a recreational activity, largely because you have never done it or wanted to do it
I've probably done it rather more than you have.
This however is going off topic. The issue is support for a 'right' to own guns in Poland as the thread title suggests. And the government's formal consultation process suggests that thge broader opinion within Polish society is against this, as are the stats that only 0.76% of Poles hold firearms licences.