public static void InitializeThis(int requiredForLevelExperience, float changingExpCoeff)
    {
        RequiredForLevelExperience = requiredForLevelExperience;
        ChangingExpCoeff           = changingExpCoeff;
        int requiredForNextLevelExperience = Mathf.RoundToInt(RequiredForLevelExperience * Mathf.Pow(ChangingExpCoeff, CurrentLevel - 1));

        OnChangeExp?.Invoke(AmountOfExperience, requiredForNextLevelExperience);
        OnIncreaseLevel?.Invoke(CurrentLevel);
    }
    public static void ToChangeAmountOfExp(int changeNumber)
    {
        AmountOfExperience += changeNumber;

        int requiredForNextLevelExperience = Mathf.RoundToInt(RequiredForLevelExperience * Mathf.Pow(ChangingExpCoeff, CurrentLevel - 1));

        if (AmountOfExperience >= requiredForNextLevelExperience)
        {
            AmountOfExperience            -= requiredForNextLevelExperience;
            requiredForNextLevelExperience = Mathf.RoundToInt(RequiredForLevelExperience * Mathf.Pow(ChangingExpCoeff, CurrentLevel - 1));
            IncreaseLevel();
        }

        OnChangeExp?.Invoke(AmountOfExperience, requiredForNextLevelExperience);
    }