Peugeot 307 jack stripping

Hello, I am a new member. My car, a 307, had a flat tire yesterday. I lifted the jack to change the tire and the car lifted up. Then I lowered it and lifted it again. This time, the car fell down. My jack is not working. When I open the jack, when I put my foot on it, the jack closes back and there is a spring on the rotating shaft.

Hello sir, do not bother with it at all, sir, there is probably a problem in the gear part, I say do not use it again, God forbid, it may cause harm to you or someone else.

I won't use it yet, I threw it away, where can I find a new one? It's not available in the market.