About ten years ago, I was getting stressed out about it. Someone told me:
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Stick to what you know well, if it will do what you want the end user won't care.
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If what you know won't do what you want, find the thing that will do what you want and just focus on that. No need to go down a million rabbit holes.
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If your team is using something you don't know, learn that and just focus on that and ask for help if you get lost.
I've found this advice to be extremely useful.
I'm managing some devs right now, one of whom is going really slowly. She's determined to do her part of the project in React. I said to her "How comfortable are you in React." She said "Not really, I'm totally new to it. I've used Angular in the past and React is really different." I said "Why aren't you doing your part of the project in Angular?" She had no good answer.