F# has quite a bit of awkwardness related to dotnet compatibility.

In practice you have to use a lot of C# class based code, which brings an inherent mismatch to the functional model and makes code look more like a multi-paradigm language like Scala.

The tooling and ecosystem is great (though not as good as for C#, obviously...), the language has some very nice features and design decisions, but you have to live with a somewhat messy reality.

In practice sticking to C# is probably wiser.