Yep the thing is to learn at least one, then its VERY easy to jump into another (usually). The simple things such as loops, functions, classes, etc...etc... are all about the same nowadays. Its more about what you are trying to do rather than the language you find yourself using.

If I had to do it again, I would try out either python (for a on computer solution), javascript for web stuff, or C/C++ if you want to go crazy and learn low level stuff. Go/Rust is fine too. Any language is ok really. Just try it out and see what you like!