Teammate's temper has been a bit short these past two days in raids

Basically, when we encounter small mobs, if the first person doesn't clear them out, then when others arrive, they immediately start shooting. And then he'll say in a bad tone, 'Hurry up and clear the mobs.' But when it was his turn, he also took a few shots before clearing them. Honestly, I don't think it's a big deal, but now he's starting to pressure teammates. I don't want to be this stressed while playing a game. I played a few more rounds with him just now, and he was still in a bad mood, so I took a break. Maybe it's like men having their monthly days too. I'm thinking about how to communicate with him.