Phone is locked and I cant find any way to recover my phone

There was this phone that I found, and it worked, but it had a pattern password that I never could open. Since it is an old phone, I never knew what Android version it was using. However, I did a test to see if the OS was under Android 4.4 by entering an incorrect password five times. It did not give me any screens that allowed me to use a Google password or a backup password, so it leads me to believe that it is running Android 5.0 and up, which means that it may have a Google account on it, which, again, I don't know the password to.