While entering a parking lot at a low speed, with my foot already firmly applied to the brake due to the close proximity of a parking space, the vehicle suddenly accelerated on its own unexpectedly. Despite continuous pressure on the brake pedal, the vehicle proceeded forward, struck another parked vehicle, and continued moving for approximately two additional seconds before coming to a stop on its own. Additionally, no forward collision/crash warning alert was activated prior to impact, and the airbags did not deploy during the collision.