Just how am i supposed to balance taking orders for both cafe and drive thru and get and warm all the food while trying to smile and remain calm?

I can't do it. The drive thru line is endless. The cafe is open now and I'm trying to take those orders too and people are ordering tons of food and oh theres mobile order food too. I just can't do it. I got extremely frazzled and was frantically trying to remember what someone ordered and I said ok I'll just roll with it. My manager walked by and laughed at me saying that and I wanted to scream at her.

Listen pal we are stupidly understaffed and I have too much on my plate and nobody can help me. I do not need your crap and I'm trying not to have a mental breakd0wn because I'm about to start throwing things