What if I panic during exams—any way to get help?

Hi everyone, I get really bad test anxiety and completely freeze up during exams. It’s gotten worse with online tests because there’s no one around to calm me down. I’m seriously wondering if it’s possible to have someone take my online exam if I feel too anxious to do it myself. Has anyone dealt with this kind of panic before? What’s the best way to get help while still staying safe and stress-free?