Lost My iPhone

Unless you had a third-party tracking app installed on the phone, such as life 360, there is no other way to track it if find my was turned off. You may want to report it to local law enforcement and your cellular carrier if you had one! https://support.apple.com/en-us/HT211207

lsharpstart Said:

"Lost My iPhone: Hi, I lost my iPhone but I did not have Find My enabled. Is there any other way I can track my device?"

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Fining an iPhone w/o Find My:

Do it the oldefamhimes way, and backtrack your locations (if at a coffee shop, then stop in, asking if it was placed aside by the manger). You could also dial it, seeing if you hear it ring in the other room. Text it, asking whomever finds it to contact you.