How to extend or make custom PasswordBroker sendResetLink() method in Laravel 5.8?

Currently the logic behind Resetting Password is that user must provide valid/registered e-mail to receive password recovery e-mail.

In my case I don't want to validate if the e-mail is registered or not due to security concerns and I want to just do the check in back-end and tell user that "If he has provided registered e-mail, he should get recovery e-mail shortly".

What I've done to achieve this is edited in vendor\laravel\framework\src\Illuminate\Auth\Passwords\PasswordBroker.php sendResetLink() method from this:

 /**
     * Send a password reset link to a user.
     *
     * @param  array  $credentials
     * @return string
     */
    public function sendResetLink(array $credentials)
    {
        // First we will check to see if we found a user at the given credentials and
        // if we did not we will redirect back to this current URI with a piece of
        // "flash" data in the session to indicate to the developers the errors.
        $user = $this->getUser($credentials);

        if (is_null($user)) {
            return static::INVALID_USER;
        }

        // Once we have the reset token, we are ready to send the message out to this
        // user with a link to reset their password. We will then redirect back to
        // the current URI having nothing set in the session to indicate errors.
        $user->sendPasswordResetNotification(
            $this->tokens->create($user)
        );

        return static::RESET_LINK_SENT;
    }

to this:

 /**
     * Send a password reset link to a user.
     *
     * @param  array  $credentials
     * @return string
     */
    public function sendResetLink(array $credentials)
    {
        // First we will check to see if we found a user at the given credentials and
        // if we did not we will redirect back to this current URI with a piece of
        // "flash" data in the session to indicate to the developers the errors.
        $user = $this->getUser($credentials);

//        if (is_null($user)) {
//            return static::INVALID_USER;
//        }

        // Once we have the reset token, we are ready to send the message out to this
        // user with a link to reset their password. We will then redirect back to
        // the current URI having nothing set in the session to indicate errors.
        if(!is_null($user)) {
            $user->sendPasswordResetNotification(
                $this->tokens->create($user)
            );
        }

        return static::RESET_LINK_SENT;
    }

This hard-coded option is not the best solution because it will disappear after update.. so I would like to know how can I extend or implement this change within the project scope within App folder to preserve this change at all times?

P.S. I've tried solution mentioned here: Laravel 5.3 Password Broker Customization but it didn't work.. also directory tree differs and I couldn't understand where to put new PasswordBroker.php file.

Thanks in advance!

The easiest solution here would be to place your customised code in app\Http\Controllers\Auth\ForgotPasswordController - this is the controller that pulls in the SendsPasswordResetEmails trait.

Your method overrides the one provided by that trait, so it will be called instead of the one in the trait. You could override the whole sendResetLinkEmail method with your code to always return the same response regardless of success.

public function sendResetLinkEmail(Request $request)
{
    $this->validateEmail($request);

    // We will send the password reset link to this user. Once we have attempted
    // to send the link, we will examine the response then see the message we
    // need to show to the user. Finally, we'll send out a proper response.
    $response = $this->broker()->sendResetLink(
        $request->only('email')
    );

    return back()->with('status', "If you've provided registered e-mail, you should get recovery e-mail shortly.");
}