Plugin system not casting properly

public void LoadAndRunPlugins()
{
    foreach (string dllFile in Directory.GetFiles(pluginDirectory, "*.dll"))
    {
        try
        {
            Assembly assembly = pluginLoadContext.LoadFromAssemblyPath(Path.GetFullPath(dllFile));

            foreach (Type type in assembly.GetTypes().Where(asm => !asm.FullName.Contains("GyroShell.Library")))
            {
                if (type.GetInterface("IPlugin") != null)
                {
                    IPlugin plugin = Activator.CreateInstance(type) as IPlugin;
                    plugin.Initialize();
                }
            }
        }
        catch (Exception ex)
        {
            Debug.WriteLine($"[-] PluginManager: Error loading and running plugin from {dllFile}: {ex.Message}");
        }
    }
}

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using GyroShell.Library.Interfaces;

namespace TestGyroShellModule
{
    public class PluginRoot : IPlugin
    {
        //public IPluginInfo PluginInformation => new PluginInfo();

        public void Initialize()
        {
            Debug.WriteLine("We're alive from test plugin!");
        }

        public void Shutdown()
        {
            // Shutdown logic
        }

        /*private class PluginInfo : IPluginInfo
        {
            public string Name => "Test GyroShell Plugin";
        }*/
    }
}