"i bought an Emerson EWF2006 but it didn't com with a remote and changing the picture setting in the menu i accidentally click

Well, if you managed to change it through the menu you should be able to change it back. Try that.
When I am dead up against the wall and need a replacement remote I use remotes dot com. They have three remotes in the thirty-dollar range that claim to be compatible; I don't guarantee you that it will work.