(New to unity and programming in general) How do I change the language from C# to Javascript

Unity Engine
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1

I need a description on how to change the language to Javascript from C#, I tried changing the the file name, for example Game.cs → Game.js but it just did Game.js.cs

2

Unityscript (sometimes called Javascript) support has been removed.

3

If you know already programming basics there is no difference in what language you use. A quick intro to C# with total basics so you don’t have to google each step.