UAS pilot reported losing ability to control new drone on three test flights.

Narrative

I bought a HS 720-4K factory new and sealed from web site. Holy Stone Foldable Drone. Receiving it there was damage out of the sealed box to a propeller blade B2 (a nick to the leading edge); I replaced it before flying with the replacement provided; fully charged the batteries; did the pairing and compass calibration and had a good GPS signal before taking off;Flight One: I had left stick control but intermittent would not respond to the right stick; landed safely. Reset both the drone and controller battery; did a compass calibration; per instruction manual troubleshooting guide. Flight Two: Took off and it slid to the right; uncontrollable; non-responsive to emergency stop; crash; no damage to person or property; (no pre-flight connection or defects noted). Reset both the drone and controller battery; replaced 2 more props did a compass calibration; per instruction manual troubleshooting guide.Flight Three: Took off and slid to the left; responsive intermittent to right stick inputs for a few seconds and then slide to the right uncontrollably; impacting a post and then crashing to the left; emergency stop again unresponsive. No damage to person or property besides the drone (no pre-flight connection or defects noted). Drone marked as unairworthy by A&P mechanic; and taken out of service not being flow as 107; report to the manufacture and a NASA report filed.