how combine 3xN metrix all the options

It appears you do know how to write the code for for a three-team three-game series, but you answered my question ... do you want to make your code flexible ... i.e., the number of teams can vary ? ... with "no." That's confusing.

If you want to make the number of teams variable, you need to implement a combination-creating solution, and that will probably be recursive.

CodeProject has seven articles on creating Permutations and Combinations in C#: [^]. I predict you will find usable code in those articles.

Here's an example of using the code in the first CodeProject article linked-to above, "Permutations, Combinations, and Variations using C# Generics" by Adrian Atkinson, to create the possible variations you describe:

// required along with the source code from the article, and other usual references
using Facet.Combinatorics;

private List<string> outcomes = new List<string>{"Win", "Tie", "Lose"};
private List<List<string>> possibleOutcomes = new List<List<string>>(); 

private void button2_Click(object sender, EventArgs e)
{
    Variations<string> games = new Variations<string>(outcomes, 3, GenerateOption.WithRepetition);

    // get the result into a "concrete" List<List<string>>
    possibleOutcomes = games.Select(lst => lst.ToList()).ToList();

    // check the reults
    foreach (var game in possibleOutcomes)
    {
        Console.WriteLine(String.Format("{{{0} {1} {2}}}", game[0], game[1], game[2]));
    }
}

Also, I suggest you review the discussion and C# permutation-building strategies here: [^], to focus on what type of permutation-builder you want to implement, and get some ideas of the computational cost/speed/memory-use.