Okay, usually in this case it looks like you might want to invest in a conditioner spray (found here
), a wig comb (here
), and a Styrofoam head (here
Pin the wig onto the head, spray it with the conditioner and GENTLY comb it out. If you brush too hard, you are going to pull out the hairs and damage the wig further. Also, you might want to find some sort of stable way to hold down the head so you can use it. Find a buddy, or a bottle or something (Really, I have no clue ;_; sorry!) But try that out! D: I do hope you can fix it!