You can use Visual Studio Code: https://code.visualstudio.com/ I use it for Web and Python. You can use it for many languages: C++, C#, Java and so on. It is more difficult than IDE but maybe it will be interesting and useful for you. You will find step-by-step instruction on official web site about VSCode. But I prefer use C# and Unity with VS. I tried to use VSCode with Unity. It works but it is my habit to use VS for C# programming. For example, VSCode is good for Unity if you use different operating systems: https://code.visualstudio.com/docs/other/unity