I reshoot the video

In this video you can see easily how ball will fall down from a certain height.I have used a pin to hold the ball but changes in the design of box will work to hold and drop the ball after getting a certain height.
There are three mechanical advantage in this mechanism.
(1)The seesaw will itself get it's initial position.
(2)when ball will hit a piston after falling down then the piston will also work to hit the ball in response.
(3)when ball hit the piston generator then the counterweight tilt further and will hit with a spring.this spring then will work to bounce back the counterweight.in this way these three mechanical advantage will work to reduce the input in this mechanism but out will be morehttps://youtu.be/9yQ9Ln7jBQ8

Violation of first law of thermodynamics. Your videos all failed to prove what you are postulating.

Please reshoot an actual demonstration of your device working, much like the video that followed yours showing the coils and magnets driving a small motor.

In this way you can PROVE the suppositions you have put forth.

Why my videos are failed ?
If anyone who is physicist will never say that my videos are failed.
I have shown in my video that potential energy can be increased using minimal energy as input and seesaw can get back it's initial position then why this shouldn't work.

Dear Sir,
I think using of coil and magnets will be not a cool option instead of piston generator.
Because the lenz law though this law will not work at the time when ball will fall down but at the time of getting back it's initial position.
But if we use piston generator then this problem will not be occurred even we can install the piston generator outside the system by cover the sidewall of box with a flexible rubber sheet.when ball will hit with this sheet then it stretched with ball ,pushing piston of generator.it will work like a spring.
The main problem is I don't have piston generator and cannot afford them but if you could help me then you can test or if you have piston generator then build it.
If you could tell me some other options to prove it then tell me.
I shall be very grateful to you.

Hello,
Overunity proved
See the link
https://youtu.be/1raDr-qRtrg
The weight of ball is 500 gram and counterweight is 800 gram.the seesaw is tilted towards counterweight side.
The ball is falling down from 80 cm height at the time of tilting and from 70 cm height at the time of reversing of arm.
The counterweight is lifting only 30 cm.Now calculate input and output.