One more: Playing football (Warsaw)

I'm playing football (American English: soccer) for several years now. Although not on a high level, I'd like to continue playing in Warsaw.

Does anybody know, where I might join in? In Germany, it's quite easy to find a club where you can play - but there are often in- and outdoor leisure footballers playing, too. If possible, I'd like to play regularly Protected content a week) and avoid using the gym. ;)

I'd be glad about any advice, thanks!