My iPhone got stolen but I already sign out my Apple ID from the phone! I want to track the phone

Unfortunately, the worst thing you can do is sign out of your Apple ID on this phone for two reasons:

1. There is no method now available to you, from Apple, to track it. The only method was to use "Find My," but that is now disabled on this phone when you signed out of your ID.
2. Your stolen phone is no longer activation locked ... for the same reason. That means that this phone can now potentially be accessed.

There are, at least, three things you need to do immediately:

1. Change your Apple ID password.
2. Contact your local law enforcement agency to report the phone as stolen.
3. Contact your cellular provider to report the phone as stolen, as well.

Hello ~ Follow the excellent advise of Tesserax immediately

~Katana-San~

You cannot track the device if you signed out.

No. Since you elected to sign out of your Apple ID, no one here, nor Apple can help you recover your phone. There is NO tracking method outside of "Find My." ... and again, you disabled it. Sorry!