What can I do so I don't cry when my grandma yells?

Who's yelling? You, grandma, both, everyone?

This is on your profile page: "This morning my grandma woke me up for school and I yelled at her then I started crying. I just really really need help right now."

Is your school shut at the moment? Are you upset about the current health emergency, and unable to cope with your grandma at the same time?

I am sorry, have you spoken to your parents. Are they taking care of her?  Your parents may be under tremendous pressure dealing with grandma.  If so, I  would suggest they come and read some posting here, sometimes people put all their effort into caring for adult, and neglect others.   In this era of Corona, it is hard for you to stay out of the house, but hopefully that will be over soon.   In the meantime, try and avoid her.

Is your grandma your guardian? Are there other adults in the household?

Ur age would help.

I think we need more info. What's going on??