might not have been anything you did, my 1st CL match against a similar quality but higher level opponent, both low 90's, I decided for some reason to weaken my team to about 75% for this away game, maybe I thought they were weaker then they changed their team, anyway, I was as I expected getting beat 2-0 away about 17% inferior to them, then I went and won 4-2, I didn't change anything, i'd resigned to losing, but with doing nothing suddenly I came from 2 down to win 4-2 away at a better quality higher lever opponent