When I log into MP, I go to the filter and check RANKED, and games will show up, but on ones in them!
And idk if this is suppose to happen or what, but Ill equip a weapon like the MK, and Ill get 20 kills over the course of two games, so why don't I have an unlock for an attachment for it? It says I still have 0 kills with this weapon.

I'm assuming you're playing unranked matches to get those kills? Cause you're not killing anyone in a ranked game of MP cause no one's in them...As to your question about MP, I have no idea, but, in unranked matches after you're session is over and you log off, it resets you back to what you were before. So the solution....never log off!

Ok so Im not getting those kills because Im in unranked because theres no ranked matches to play?
All the ranked games say theres 0/16 people in EVERY server.

Yeah I noticed it did that earlier too.
Does anyone know when the ranked becomes available?