Common app essay errors

This may sound really dumb… but when you are writing the common app essay, should you purposefully make 1 or grammar mistakes or spelling mistakes? The reason why I think is if I don’t have any grammar or spelling mistakes, I think admissions officers will suspect that someone else helped my essay. any thoughts?

I don’t think so. Having no grammar or spelling mistakes wouldn’t make the AOs suspect that someone else wrote it for you. They have read tons of essays. They will see that through the writing style as it is easy to detect whether an adult wrote the essay versus the student. Plus, there is nothing wrong with having a teacher/counselor look over the essay to catch any errors.