Ugh, that sucks :/ It’s already hard enough learning a new language without someone being rude about it. Honestly, I’d say don’t suck it up tho. Maybe next time he says something, call him out like, “Hey, I’m trying here. Can you chill?” Sometimes ppl don’t realize how much they’re being jerks unless someone tells them. And if he keeps doing it, maybe talk to your teacher? You’re there to learn, not to get laughed at smh.