What's it like to run 800 in college physical fitness test?

From high school to college, I always came last in the 800-meter test and never changed. Moreover, my running posture is particularly ridiculous, which has caused me a great psychological shadow. He came last every time and failed every time. Every time I say that I must be last again, I laugh at myself. When the teacher asked us to report the results one by one, when it was my turn to finish reporting, the teacher always looked at me with strange eyes, which really hurt me. It's not that I haven't tried, it just seems useless. I may be the kind with poor physical fitness. It's painful to run, and it's really hard to take care of others' eyes after running. I feel relieved every time I finish running. I was nervous before running. That's it anyway. I don't know how to solve this painful situation.