As I recreational drone pilot, I have learned the hard way to conduct a thorough preflight inspection beginning even before I leave for the field. At home, I check the propellers to make sure they are secure and all exposed hex bolts to make sure they are tightly fastened including bolts securing the motor mounts.
Prior to takeoff I go through the following steps:
Turn on anti-collision strobes - there are two, one on the bottom and one on top.
Turn on the RemoteID (RID) module
Turn on the camera
Turn on the transmitter, toggle the landing gear switch
Power on the aircraft and wait to acquire satellites
After GPS lock, start camera recording
I am ready for takeoff. Afterwards, I do the above steps in reverse.