Part 107 UAS pilot reported accidentally conducting a UAS flight in controlled airspace without LAANC authorization.

Narrative

On Day 0 at approximately XA:17 PM; I was the Remote Pilot in Command (RPIC) operating in the vicinity of Location X. I was flying a DJI Mavic 3 Classic in Class D airspace under the 100-foot altitude threshold. Weather conditions were clear with daytime visibility. The total flight duration was under 10 minutes.The purpose of the flight was to capture a few photos of the golf course. Upon landing; I realized I had made a human error and accidentally forgot to obtain LAANC authorization prior to the flight. I normally complete my authorizations an hour before takeoff; as I do not always have a guaranteed time of arrival the night before.This was an honest mistake and serves as an important reminder for me to slow down; follow my checklist; and double-check all requirements before takeoff. I sincerely apologize for this error and am grateful for the opportunity to operate in Class D airspace. I recognize my responsibility to ensure all authorizations are completed in a timely manner to maintain safety for myself and the surrounding community.