You can find your lost OnePlus 6 by following the same methods of finding any android device using your Google account. Here is how you do it:
Step 1: To begin tracking down a misplaced, stolen, or lost OnePlus 6 and determining its general location, we need to have computer access, tablet, or smartphone equipped with internet access.
Step 2: When we approach the website google.com/android/find for the first time after not logging into our Google account, we will be prompted to enter our email address and password. Keep in mind that you must use the email address that is associated with the OnePlus 6.
Step 3: Once the session has begun, we will notice a menu on the screen's left side containing numerous options.
Step 4: Some of these options include the ability to play a ringtone, locking the device, and delete the data stored on the OnePlus 6.