laravel/app/Http/Controllers/AdminContoller.php

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class AdminContoller extends Controller
{
    public function getDB(Request $request) {
       
        $user = new \App\User;
        $get = $user::all();
        $get = json_decode($get, true);
        
        return view('admin')->with(['users'=> $get]);
    }
  
}