Software QA

Hi there, I'm trying to break into Software QA. Since I'm new to this, I'd like to learn more from anyone with QA experience. I had the following questions:

– What testing tools do you prefer and why?

– Can you tell me about a time you missed a bug and how you remedied the situation?

– What challenges have you encountered with automation during testing?

– What’s an example of how you enhanced the QA process at your company?

I'd greatly appreciate any of your feedback based on your real-life experiences so I can better understand the nature of the job.

Thanks!