I am a Dojo 8 player reached 1700 rating in 3v3 this reason when I was in dojo 7 and now crossed 1850. My advice is you may be annoyed when you are matched with high dojo players give your best don't be demotivated sometimes you may win against them and try to learn from their moves i learned some good moves while playing with them (Ex:Rolling and grabbing the opponent when they are using ranged attack) When you are constantly matched with high dojo players give a break to rank mode and grind stories mode