looking for a website BDSM type

hello I'm a newbie when it comes to porn and the Internet I'm looking for certain type of porn I do not know the name of the genre I sought on a a European or a German site basically they had individuals chained to the wall they would unhook them
and for some screw each other not sure the what's and why's that I like that but can anyone point me in the right direction to some websites and the name of that genre thank you in advance