Can someone plz change the difficulty from peacfull because we can't get mob drops that We need like brass and bones and dalekanium so can some turn it from peacefull.

This is an issue that the staff are trying to fix. You're also double-posting as there is a thread literally below yours, it would be nice if you could please delete the content from this thread and have a look at the other thread. 

Please try to read other similar posts before you post, it saves space. :) You could've make a comment on the thread below yours and not make a whole thread just for your request.

As shown, this is yet another reason why this forum really needs a delete thread/comment button for these kind of threads.