loop through a renderer

I have a piece of java script code i am converting over to C# - Although, its wrong and i was hoping for some help since im getting an error.

Here is the java script

 var gcic = GetComponentsInChildren(Renderer);
     for(var go : Renderer in gcic){
 go.renderer.enabled = false;

here is what i came up with so far:

 Renderer gcic = GetComponentInChildren<Renderer>();
                 
     foreach(Renderer go in gcic){
        go.renderer.enabled = false;

I do get an error that i cant use foreach on Renderer.

 error CS1579: foreach statement cannot operate on variables of type `UnityEngine.Renderer' because it does not contain a definition for `GetEnumerator' or is not accessible