Can I create a game using javascript only without c#? and how?

I learned javascript and I want to creat a game, I have heared that I can create a game in unity using javascript only without c#. Is it right? If yes, I want to know how in details.

Unity has ended support of Javascript ever since 2017, unfortunately. Unless you use an older version, which I wouldn’t recommend, you’re better off learning C# if you want to use Unity. Don’t worry though, it’s not hard and the implementation of C# in Unity is actually very similar to how Javascript(“Unityscript” as we used to call it) itself worked in Unity, probably one of the reasons why they scrapped it in the first place.

Why don’t you check out Unity Learn’s tutorials on getting started with Unity? There’s a whole bunch of them and they’re very well made. Best of wishes to your game development journey!