can i use a or operator || in c#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace interactive_quiz
{
    class Program
    {
        static void Main(string[] args)
        {
            var score = 0;




                    Console.Write("liverpool have won 5 european cups ");
                    var answer1 = Console.ReadLine();


                    if (answer1.ToLower() == "true")
                    {
                        score += 1;
                    }
                    else if (answer1.ToLower()!= "true"||"false")// this line of code is giving me an error why
                    {
                    Console.WriteLine("please answer true or false");
                    };

                    Console.Write("liverpool won the premier League in 1999 ");
                    var answer2 = Console.ReadLine();


                    if (answer2.ToLower() == "false")
                    {
                        score += 1;
                    }



            Console.Write("liverpool's home ground is at anfield ");
            var answer3 = Console.ReadLine();


            if (answer3.ToLower() == "true")
            {
                score += 1;
            }

            Console.WriteLine("your score is " + score);
            Console.ReadLine();
        }
    }
}