Answer 1

C# with unity
Java with Android Studio (if you are going for Android)
Python with Pygame
Web (I don't think I need to elaborate it)
C++ (Unreal engine)
Tip:- You can use blender (a 3D creation suite) to create models for your games)
Good Luck!

Answer 2

Since you are into web based games:- then go for Javascript

Answer 3

JavaScript would help you. Check the different web based codes and games here in the code playground. They can help you.

Answer 4

Web technologies are going to help you on your way. My suggestion is that, learn JS first, after that worry for other things.