What is the difference between passing a struct and pointer of the struct, are they not both pointers?

For example

var myStructRef *Vertex
var myStruct Vertex
myStructRef = &Vertex{2, 3}
myStruct = Vertex{2, 3}

fmt.Println(myStructRef)
fmt.Println(myStruct)
changeByReferenceStruct(myStructRef)
changeByValueStruct(myStruct)
fmt.Println(myStructRef)
fmt.Println(myStruct)

And

func changeByValueStruct(myStruct Vertex) {
    myStruct.X = 5
    fmt.Println(myStruct)
}


func changeByReferenceStruct(myStruct *Vertex) {
    myStruct.X = 7
    fmt.Println(myStruct)
}

Isn't both myStructRef *Vertex and myStruct Vertex a pointer pointing to the struct itself? Why is there a discrepancy in behavior when I modify the struct in a function?

Is golang creating a new struct in changeByValueStruct when it resolves the parameter?