imei

Try using Find My Phone.

Find My Phone - If your device is lost or stolen. https://support.apple.com/en-us/HT201472

Find My Phone - Lock and track your device using Lost Mode. https://support.apple.com/guide/icloud/use-lost-mode-mmfc0f0165/icloud

Hi,

no, you can't. You need your iCloud account and Find My iPhone to locate your phone.