How to add an element to the end of an array in JavaScript?

Hello everyone! I just started learning JavaScript and ran into a problem. I have an array with user names:

let users = ['Anna', 'Boris', 'Victor'];

I want to add a new name 'Gleb' to the end of this array, but I don't understand how to do it correctly. I tried writing something like:

users = users + 'Gleb';

But as a result, I get a strange string "Anna,Boris,VictorGleb" instead of an array. Then I tried using square brackets:

users[users.length] = 'Gleb';

This seemed to work, but I'm not sure if this is the correct way. I also heard about some methods like push, pop, shift, unshift, but I'm confused. Please tell me how to professionally add elements to the end of an array? And is there a difference between