Should I resign after disappointing the manager?

I made grave mistakes during presentation to my boss. She was extremely upset and stormed away.

Here’s what happened——I was presenting the new property project to the manager. Super nervous, I made a few mistakes in wordings. The trigger point was I was counting the number when she asked for the price of the unit.

The senior said she wasn’t firing me but I feel kind of hopeless. I tried so hard in memorising stuff and presenting them.

I tried socialising to consolidate my confidence. It worked once but faltered.

Is it that I am not a good fit to the company, or even to workplace.

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