When in fighting games as a decent rank player, you struggle against a new or low-ranked player due to the fact that they use strategies and their characters' kit in such a way that you have never seen before, or use a strategy that you haven’t seen in such a long time.
I was playing some games online and I for some reason struggled against a player that was way worse than me. They played so weird and the fight would’ve been easy if it wasn’t for their Newbie foreign tactics.