Identify outlets by yourself.
I often have to figure out wich breaker services an outlet alone. Some are cracked and or damaged in some way but still have not tripped the breaker.
If there's power to the suspect outlet I simply plug in my radio and turn it up so I can hear it at the breaker box. Keep a flashlight handy as one could end up in the dark.
Turn off each breaker (and back on if radio still plays) until radio is confirmed to be "off".
Use a meter at outlet to be sure you have isolated the power source.
Replace oulet and unisolate and test .
I just thought I'd throw it out there as I do this all the time on resedentual property I own.
P.S. anything over 4160 KV YOU should have a buddy with you although back in the
day I did it myself but did wear PPE. This is for home trouble shooting only. Simple receptial work.