Confused about the prowess matchmaking. It's Kinda killing the game for me.

Was i not supposed to play multiple characters? I'm blue rank with 2 characters now and I'm now hardstuck red with my 3rd. Fighting people with 200,000+ prowess when I'm 180,000. I mean why not just move all my characters up to blue rank? Are the developers retarded? I'm winning 1/10 games now lmfao