/ Are Polish Christians here?
I suspect that seeking Polish Christian evangelical or fundamentalist believers on this forum will be a fruitless effort.
The rough statistics are that during the papacy of JP2 and under communist rule, about 97% of Poles claimed membership of the Catholic Church.
Historically, the main protestant church from 16th century was Kościół Ewangelicko-Reformowany w RP, which now numbers about 1500 members in 8 churches.
Attendance in the Catholic Church since 1989 has been decreasing, possibly by as much as 25%.
Poland's evangelical population has grown slightly, but is still very small; about 40,000 professing evangelical believers among a population of approximately 38 million. Denominations like the Brethren Assemblies, the Baptist Union, the Pentecostal Church, and the Evangelical Free Church are viewed by most Poles as sects.
Of these, I can only speak of my own interest.
There are 39 brethren assemblies in Poland and around 28 groups meeting in homes. For cultural comparison, there are 871 assemblies in Romania - which was never a Catholic cntrolled country.