So my right rear wheel is crocked and it's only that tire can anyone help me?

 

^^

 

I just had this problem in the front with the lower control arm (bushings were in really bad shape), might want to check that quickly as it's dangerous and your tires get worn unevenly.

Go get it checked by a mechanic ASAP.

 

What is a "crocked" rear wheel? Is it cracked or crooked?

 

A crocked rear wheel is a wheel you slow-cook in a crock pot all day while you're in the living room watching foosball.