My luck has been awful on rank up matches

4 games I’ve been 1 win away from masterball. One loss was due to being fully paralyzed 4 out of 5 times. Next 2 was due to being rock slide flinched 3 times in a row. And then just now I was in such a winning position and my Charizard missed 3 straight heat waves against the sneasler, which it then went on to fire claw sleep my other mons. It’s a skill issue at this point😔🔫