How to use && in "do" and "while" expressions?

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C#

My code is supposed to mimic an account creator and give the user errors when given an improper password (I'll eventually get to Username requirements). I want to loop some code if the user input an improper password but I can't seem to get it down. Any suggestion would be appreciated.

What I have tried:

using System;

namespace ConsoleApp4
{
    class Program
    {
        static void Main(string[] args)
        {
            string Username;
            string Password;
            int Zero;
            int CapCharacters;
            int LowCharacters;
            int Digits;
            int Symbols;
            int PassLength;

            Console.WriteLine("Hello user, please follow these instructions to create your new account.\n");
            Console.Write($"Please enter a username to go by: ");
            Username = Console.ReadLine();

            do
            {
                Zero = 0;
                CapCharacters = 0;
                LowCharacters = 0;
                Digits = 0;
                Symbols = 0;

                Console.Write($"\nAlright {Username}, now please enter a password: ");
                Password = Console.ReadLine(); // Password rules: 6-12 chara, 1 cap, 1 low, 1 num, 1 sym.
                PassLength = Password.Length;
                Console.WriteLine("");

                while (Zero < PassLength)
                {
                    if (Password[Zero] >= 'a' && Password[Zero] <= 'z')
                    {
                        LowCharacters++;
                    }

                    else if (Password[Zero] >= 'A' && Password[Zero] <= 'Z')
                    {
                        CapCharacters++;
                    }

                    else if (Password[Zero] >= '0' && Password[Zero] <= '9')
                    {
                        Digits++;
                    }
                    else
                    {
                        Symbols++;
                    }

                    Zero++;
                }


                if (Password.Length < 6)
                {
                    Console.WriteLine("Error: Your Password is too short.");
                }

                if (Password.Length > 12)
                {
                    Console.WriteLine("Error: Your Password is too long.");
                }

                if (CapCharacters < 1)
                {
                    Console.WriteLine("Error: Your Password needs to contain a capital letter.");
                }

                if (LowCharacters < 1)
                {
                    Console.WriteLine("Error: Your Password needs to contain a lowercase letter.");
                }

                if (Digits < 1)
                {
                    Console.WriteLine("Error: Your Password needs to contain a digit.");
                }

                if (Symbols < 1)
                {
                    Console.WriteLine("Error: Your Password needs to contain a symbol.");
                }
            }

            while (Password.Length < 6 && Password.Length > 12 &&
                   CapCharacters < 1 && LowCharacters < 1 &&
                   Digits < 1 && Symbols < 1);

            Console.WriteLine("");
            Console.WriteLine("Congradulations, your account is now set up!");
            Console.WriteLine("");
        }
    }
}