C# is the worst and I hate it

CSharpIstheWorst.cs

public void NotACoroutine()
{
    Action callback = null;
    for (var index = 0; index < 5; index++)
    {
        Guid guid = Guid.NewGuid();
        var indexCopy = index;
        Debug.Log("Guid in loop body: " + guid + ", index: " + index + ", index copy: " + indexCopy);
        if (callback == null)
        {
            Debug.Log("Callback hasn't been set, setting it now");
            callback = () => {
                Debug.Log("guid: " + guid.ToString() + ", index: " + index + ", index copy: " + indexCopy);
            };
        }
    }
    callback();
}

// Prints:
//
// Guid in loop body: e75cb8c1-f068-46d4-9159-19a3377a2e0b, index: 0, index copy: 0
// Callback hasn't been set, setting it now
// Guid in loop body: 3f0ce292-d590-4c27-bde3-125f63ab518d, index: 1, index copy: 1
// Guid in loop body: ab510c89-a609-40c0-97a7-18ac684fb769, index: 2, index copy: 2
// Guid in loop body: 66b5ede1-85b9-4d71-9719-67d87864c52b, index: 3, index copy: 3
// Guid in loop body: 7fa371bd-e4fd-4a21-a214-ab77c9fa9076, index: 4, index copy: 4
// guid: e75cb8c1-f068-46d4-9159-19a3377a2e0b, index: 5, index copy: 0

private IEnumerator CasinoGamesSuccess(List<SlotInfo> games)
{
    yield return null;

    Action callback = null;
    for (var index = 0; index < 5; index++)
    {
        Guid guid = Guid.NewGuid();
        var indexCopy = index;
        Debug.Log("Guid in loop body: " + guid + ", index: " + index + ", index copy: " + indexCopy);
        if (callback == null)
        {
            Debug.Log("Callback hasn't been set, setting it now");
            callback = () => {
                Debug.Log("guid: " + guid.ToString() + ", index: " + index + ", index copy: " + indexCopy);
            };
        }
    }
    callback();
}


// Prints:
//
// Guid in loop body: e75cb8c1-f068-46d4-9159-19a3377a2e0b, index: 0, index copy: 0
// Callback hasn't been set, setting it now
// Guid in loop body: 3f0ce292-d590-4c27-bde3-125f63ab518d, index: 1, index copy: 1
// Guid in loop body: ab510c89-a609-40c0-97a7-18ac684fb769, index: 2, index copy: 2
// Guid in loop body: 66b5ede1-85b9-4d71-9719-67d87864c52b, index: 3, index copy: 3
// Guid in loop body: 7fa371bd-e4fd-4a21-a214-ab77c9fa9076, index: 4, index copy: 4
// guid: 7fa371bd-e4fd-4a21-a214-ab77c9fa9076, index: 5, index copy: 4