Method of forced card stitching in C #

I am making a bot that can test some tactics of cards in the game, the bot works, but I have one problem. My way of shaking the card is not very good. I shake the cards this way:

        public void ShuffelDeck()
        {
            for (int i = 0; i < 5; i++)
                Cards = ShuffelCards(Cards);
        }

        private ArrayList ShuffelCards(ArrayList Cards)
        {
            ArrayList ShuffedCards = new ArrayList();

            Random SeedCreator = new Random();
            Random RandomNumberCreator = new Random(SeedCreator.Next());

            while (Cards.Count != 0)
            {
                int RandomNumber = RandomNumberCreator.Next(0, Cards.Count);
                ShuffedCards.Insert(ShuffedCards.Count, Cards[RandomNumber]);
                Cards.RemoveAt(RandomNumber);
            }

            return ShuffedCards; 
        }

The problem is that I count without a pause between the process of shaking the card, several players will win many games. for instance

Player 1: 8 games
Player 2: 2 games
Player 3: 0 games
Player 4: 0 games

But when I add a dialogue before the card shake process, the winnings will be distributed among the players:

Player 1: 3 games
Player 2: 2 games
Player 3: 1 game
Player 4: 4 games

I guess the Random class is not suitable for such brute force. How can I shuffle cards without problems?

Update: I already tried to use 1 Random class, and I also tried to shake cards only once.