Recreational / Hobbyist UAS pilot reported they learned after flying they had inadvertently flown without proper LAANC authorization.

Narrative

I activated a newly acquired DJI Mini 3 Pro (less than 250g) and the RC Controller map indicated no issues flying below 200 ft. AGL at my location. As a result; I undertook drone flights above my property on the afternoon of Day 0 and the morning of Day 1. While researching further drone resources online I discovered B4UFLY; UAV Coach; and ALOFT. I successfully completed The Recreational UAS Safety Test (TRUST) and subsequently requested LAANC approval for an additional flight (to test the system and my ability to access it) on the afternoon of Day 1 at XA:00. I realize now that my initial flights required approval. B4UFLY clearly indicates that fact on their map and DJI should incorporate the B4UFLY database; to avoid inadvertent violations by new owners. In retrospect; I should have done more research before flying but I was under the impression that micro drones (<250 g) could be flown anywhere <400 ft. AGL unless alerted by the DJI Fly App. I know better now and hope to educate other new drone pilots to that fact by submitting this voluntary report. Thank you for the opportunity.