Unless you are an experienced developer who's worked with a lot of different languages on a lot of different projects, I recommend going with the default tools. Today, those are JavaScript and Node.js.
There are a ton of resources for learning JavaScript and Node.js (such as FreeCodeCamp.com) and it is extremely well documented compared to most other languages.
Also, regardless of which languages and frameworks you use, you will still need to use JavaScript. So make your life easier and just focus on learning that one language well.