Comment by cardanome

You can use C#. It is well supported except for the (currently) missing web target and Microsoft is funding C# support so it will not get abandoned.

You can also use other garbage collected languages. I once tried the Lua bindings and they worked fine.

The problem with C# is that its garbadge collection is not really suited for game dev. The creator of the Mono runtime actually calls using C# his Multi-million dollar mistake and instead works on swift bindings for Godot: https://www.youtube.com/watch?v=tzt36EGKEZo

But if you really love C# nothing is stopping you. I prefer GDScript.