WHY R TEACHERS SO RUDE SOMETIMES

I’m off college cus I’m ill (had a really bad allergic reaction and my eyes swole up and everything ) ((not going to college with swolen ass eyes that embarrassing) but I emailed my teachers asking for work and only like 1 replied. They literally get so mad when ur absent but it’s not fair if u have a legit reason??? Hopefully they’ll reply soon but it’s just like I hateeee falling behind so bad because it takes me so long to catch up idk why but I just always need to know everything. And I don’t talk to anyone in my class so it’s not like I can just ask any1 to send me the work. Ugh idk I think I’m just one of those least favourite students to most teachers lol. But I wish they knew how well I’m doing FOR ME because back in school I hardly used to ever go in and now my attendance is literally so good I only have time off if I’m really sick or something.