A traditional low-line ground kick found in karate's oyo and in old-school self-defense curricula: the leg is longer than the arm and stronger than the fist.
Use a chambered kick from the frame to buy the space needed for a technical stand-up.
From the frame, chamber your top leg tight to your chest. The knee is loaded, not the foot; the foot is the projectile.
Fire the heel into their near hip or lead thigh. The heel is your hardest surface, and the hip is a large target that folds a standing attacker's structure.
Retract faster than you extend. A leg left in the air is a leg that will be grabbed. The kick's purpose is space, not damage: chain it into a shrimp, a reset, or a stand-up.