how find and update record in laravel eloquent code example

Example 1: laravel update from query

$affected = DB::table('users')
              ->where('id', 1)
              ->update(['votes' => 1]);

Example 2: update query in laravel eloquent

$data = DB::table('cart')
                ->where('crt_id', $id)
               ->update(['crt_status' =>'0']);