I've used Elixir full time for the past 6 years.
I've written Rust full time for the past 3 years.
I've written C since I was 14 in 2001. I wrote a small operating system (up to reading and running a binary from ext2) around 2004 in C, so I know how a computer works at low level. I might still be able to write x86 assembly.
I've been a MySQL DBA full time for 3 years.
I've administered Linux systems since I was 14 in 2001, and for all my professional career.
Then there's Python, Go, etc.
Probably the one I know the least is React, which means I was PM on a React codebase for a short while, and spent way too much debugging weird issues with Next.js. I stopped paying attention post-hooks, since the frontend world changes too fast, and I'm getting old.
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Again, this is not to toot my own horn, it's just that if you live and breathe computers, and hate doing the same thing for long (I blame my ADHD), over a long enough time you tend to have quite the repertoire. I think I'm quite average compared to other people that have been around as long.
You'll soon notice there doesn't tend to be anything revolutionary in computing. After your third framework and language, you'll keep finding the same ideas and concept with minor variations.