It depends on your project requirements. Golang, NodeJS and .NET all of them be used to build web backends.
Thing is if you're going with something that you don't know, it will slow you down because you need to learn it, since you know .NET and NodeJS it would make sense to go with them.
At the end of the day, it just matter of how productive you are.
Personally I always go with Python, mostly because it's the tool I know how to work with and craft my software with it.
Both golang and nodejs are linux production friendly and have tons of resources and tutorials and libs out there.
Again, I highly recommend going with something you're familiar with to be productive and match your project requirements.