dumb question: is Grammarly enough?

For those who already applied, was using Grammarly enough to catch all grammar mistakes?

I feel bad asking people to read my essays/activity sections so many times (especially with so many secondary essays), so I would want to "save" human reviews to get feedback on the quality of the content of my writings. I found that asking people to correct grammar mistakes as well makes them less critical of the actual content, so I was wondering if a computer service like Grammarly is enough for grammar mistakes.

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EDIT: Thank you everyone for the answers! I will just ask around people in addition to using Grammarly!