Game Development advice needed: What kind of libraries can you recommend?

I am currently working on my own game, which I have programmed in JavaScript. It’s very basic, I have pretty much 0 experience in Game Dev and have only watched this FCC Intro to GameDev, recreated it and added a couple of things to it.
So I am only working on my second game right now.

I have an image which I now draw onto the canvas using ctx.drawImage() and it’s fine, however I am wondering wether there is any nice way to make animations in plain JavaScript (it’s a running man). If not, what kind of libraries exist for this/in general for JavaScript Game Development.