Hello

I am looking for a friend from Germany

Then why don't you start by introducing yourself? Tell us why we should be interested in you!
Just weiting one short sentence isn't enough to find friends.

I am Living in Hannover and looking for a friend from Hannover

That wasn't really an introduction ...

Since you say you are already in Hannover then just look there. Go to organizations or events and look for people with similar interests. Or consider taking a course. In Germany one makes freinds through work, school or hobbies. One can do a sport or play chess or whatever, there are groups for everything. Just posting somewhere that one "wants a friend" doesn't bring much. Thats a bit like saying one wants to win the lottery but doesn't bother to buy a lottery ticket.