What is a simple/decent way to encrypt cookie in ASP.NET Core without using IDataProtector?

I am trying to understand how to encrypt contents of cookies in ASP.NET Core 2.1.

If I am using the IDataProtector Protect method to encrypt contents of a cookie, I have read that the Unprotect method will fail decryption if website is moved to a different server, running in a server farm, Azure, etc. If that is true and I don't want to use Redis (or moving keys around), and be able to use a simple method to encrypt contents how would I go about this?

This is my current code (using the IDataProtector):

    public static void SetEncryptedCookie()
    {
        var cookieData = new Dictionary<string, string>()
        {
            { "a", "123" },
            { "b", "xyz" },
            { "c", DateTime.Now.ToString() },
            { "UserID", "unique-number-789" }
        };

        CookieOptions options = new CookieOptions
        {
            Expires = DateTime.Now.AddDays(90)
            ,HttpOnly = true
            ,Secure = true
            ,IsEssential = true // GDPR
            ,Domain = ".example.org"
        };

        // _dataProtector = provider.CreateProtector("somepurpose");
        string protectedCookie = _dataProtector.Protect(cookieData);

        // IHttpContextAccessor _accessor
        // write cookie to http response 
        _accessor.HttpContext.Response.Cookies.Append("mycookie", protectedCookie, options);

        // retrieve encrypted cookie contents.
        // ##### this will fail in server farms.
        var cookieEnc = _accessor.HttpContext.Request.Cookies["mycookie"];
        var cookieDec =  _dataProtector.Unprotect(cookieEnc);
    }