Here is how to fall off a horse: convert the energy of hitting the ground into energy of rolling.
Let the force go into making you turn; don’t make your bones and joints have to suck up all the force and energy.
But if we studied some Parkour, we’d be good. We’d be safer and more confident. Parkourers know how to roll. They are the masters of it.
Please learn to roll!! Study some Parkour. Take care of yourself, please!
It’s physics, lots of physics.