You sound like how I was when I was 13-14 years old, with the broken clavicles and amnesia. After my reckless cycling youth, I graduated to motorcycles, on which I managed to ride for 30 years without a scratch. The good thing about riding motorcycles is that you learn good cornering technique, and they instill in you something of a two-wheeled 6th Sense, so long as you stay alive long enough to pick it up.
I suppose by now you’ll have modified your descending technique, and won’t run out of bone material to screw your clavicles together.