GDScript is very comfortable for doing simple game and UI logic, but it can be problematic that there's standard/easy way to import other people's code libraries besides copy-paste jobs.
When trying to do some sort of complex logic or when I really could use an external library for something, I simply go to C# to scratch that itch, and it's been working out pretty well for me. You can even have the two languages inter-operate to a degree within a project.
GDScript is very comfortable for doing simple game and UI logic, but it can be problematic that there's standard/easy way to import other people's code libraries besides copy-paste jobs.
When trying to do some sort of complex logic or when I really could use an external library for something, I simply go to C# to scratch that itch, and it's been working out pretty well for me. You can even have the two languages inter-operate to a degree within a project.