The question “What is your greatest weakness?” is a job interview trope.
I don’t know my greatest weakness. I don’t know my greatest strength. I haven’t given thought to either superlative.
Whatever is my greatest weakness today, probably won’t be for long. I make mistakes. I have regrets. But I’m continually improving. Mistakes and failings are learning opportunities. I am better prepared the second time I encounter a given issue or situation.
Part of the territory of being a software engineer is to always be learning, adapting, and problem solving. In that mutual endeavor we should be generous. We should stand on the shoulders of others and be a shoulder for others to stand on.