Regardless of the "Rules of Engagement", The Human Body Can Only Move In So Many Ways

Warm-Up:

Well at least some of them.

Hands - head - forearms - hips are the layers of defense in takedowns. Thus protect the lead leg with your lead hand, elbow at knee height, hand in front of the knee. Keep your head at or below your opponent’s. Use your rear hand to check and range find their head or shoulder. If they do not clear your lead hand it, your arm blocks the takedown with the help of the hip, checking into them perpendicularly.

To do the snap down your rear hand cups the head and the lead hand their elbow pull them down and lateral to your lead leg, using your legs not just your arms. Then double leg them laterally.

If they grab your wrist with their ipsilateral hand pull them across your body and grab their wrist with your free hand while freeing your hand. Pull to the single leg.

Remember that you must be eye-to-eye to engage your opponent, when you are ear-to-ear your are in a stalemated defense. To break this pull them forward, then push their ipsilateral elbow medially to break their clinch.

90° muay thai pivot drills.

Lead pivot: Rear kick, your opponent with step toward you, while you step 45° anterior laterally with the lead foot, check hand with your head hand (which will remain lead), pivot to the same stance, cross, lead hook, rear kick. Repeat. The lead pivot is easier but unless your are opposite leads will mean you are pivoting into their power side.

Rear pivot, version #1: Rear kick, your opponent with step toward you, while you step 45° anterior laterally with the rear foot, check hand with your rear hand (which will become your new lead hand), pivot to the opposite stance, cross, lead hook, rear kick. Repeat. This allows you to pivot to their weak side but is more complicated because of the lead switch.

Rear pivot, version #2: Rear kick, lead hook, cross, your opponent with step toward you, while you step 45° anterior laterally with the rear foot, check hand with your rear hand (which will become your new lead hand), pivot to the opposite stance, rear kick, lead hook, cross, pivot step. Repeat.