How to deal with toddler tantrums?

My daughter is two years old, she screams, she yells at me, she kicks the wall, she throws tantrums all the time. She yells till she coughs! Nap time. No candy, no playing outside, nothing works! She cries non stop if she doesn’t want to do something. Its every time me and her father or her grandparents go to town, endless screaming, crying and tantrums. She will do it if we try to get her to eat! I’m at my wit’s end and it’s causing major issues with my anxiety and stress levels! I’ve tried everything and I don’t know what to do!