Why are there left-hand spiral rule and right-hand spiral rule?

Why are there left-hand spiral rule and right-hand spiral rule?

There is a right-handed spiral rule, the finger points to the direction of current flow, and the thumb points to the N-pole
The right hand rule is usually used to generate electricity due to motion. For example, in a uniform magnetic field with vertical downward direction, the magnetic induction line passes through the palm with vertical upward direction, the thumb points to the direction of conductor motion, and the four fingers point to the direction of current
The left-handed rule is usually used because of electricity (magnetism). For example, in a uniform magnetic field perpendicular to the inside of the paper, the magnetic induction line passes through the palm perpendicular to the outside of the paper, and the four fingers point to the direction of motion of the charged particles. Then the thumb refers to the direction of the Lorentz magnetic force (positive + electricity) or the opposite direction (electricity) (the Lorentz magnetic force is always perpendicular to the direction of motion)

Finding the law of right hand helix and Faraday's law of electromagnetic induction

Faraday's law of electromagnetic induction: the changing magnetic field produces an electric field. The magnitude of the induced electromotive force is proportional to the speed of the change of magnetic flux

Right hand theorem, not right hand helix theorem. Who can tell me about it? Thank you
I want the right-hand theorem, not the right-hand helix theorem
If you can, please tell me the right hand theorem, the right hand helix theorem and the left hand theorem. If you say it clearly, 20 points will be added
Thank you, prawns!
Can you help me explain why the direction of the current judged by the right-hand theorem, as the direction of the current to be used by the left-hand theorem, and the direction of the force obtained are not consistent with the direction of the original velocity? Thank you

Left hand Law: the left hand is flat, and the thumb is perpendicular to the other four fingers. If the magnetic line of force is perpendicular to the palm of the hand, and the four fingers point to the current direction, then the direction pointed by the thumb is the direction of the current carrying wire under the force in the external magnetic field. This is the electromagnetic force. Remember the word "force", and the last stroke is "left", and use the left hand law