Got rejected in the middle of the interview

Hello everyone

I recently gave an interview for the position of SOC lead.

Having a good hands-on experience with SOC for a few years. I was confident I would clear the 1st round.

But as soon as the interview started, The interviewer started asking questions about one of the tools they were using in their organization. I explained the knowledge I had on the tool at the level I have worked on it.

The guy looked at me like I was an idiot. After asking a few more questions, he made it very clear that I was not gonna clear this round.

I know it's just an interview, and I have had many experiences where I had my profile not being short listed because I did not have experience in so-n-so tool. I also understand I can't learn EVERYTHING and all the tools we have in cyber security.

But I am a bit upset because I lose good opportunities and roles just because I don't know ALL the tools and technologies.

PS :- I just wanted to rant a little. If you guys have any opinions or suggestions for me please do let me.