Unity C# : Structs vs CLass

Example.cs

public class FooClass
{
    public string name;
}

public struct FooStruct
{
    public string name;
}
public static class Example
{
    public static void B(FooClass f)
    {
        f.name = "I am inside object and out of the box!";
    }

    public static void G(FooStruct F)
    {
        F.name = "I am inside struct and i am out of the box!";
    }
}


FooClass foo = new FooClass();
FooStruct fooStruct = new FooStruct();
fooStruct.name = "I am struct variable looks like i was unable to be overriden from the thing in box";
foo.name = "I am class variable looks like i was unable to be overriden from the thing in box";
        
Example.B(foo);
Example.G(fooStruct);
Debug.Log("Class = " + foo.name);
Debug.Log("Struct = " + fooStruct.name);

//We get
//Class = I am inside object and out of the box!
//Struct = I am struct variable looks like i was unable to be overriden from the thing in box