Is my flat MTB pedal repairable ?

Hello everyone!

So i was riding my new bike and noticed a weird sound in the pedal (The pedal fell off after 400 km / 250 miles)

It eventually slid off. I've taken a few photos of the damage.

Could anyone tell me if this pedal is repairable or should i just go buy a pair of new ones?

I'm a 260lbs rider, maybe those pedals aren't made for such weight 🙂

https://ibb.co/GtrkGmC

https://ibb.co/WVMC5Zf

https://ibb.co/kJ1cvY2

https://ibb.co/LrJNLs8

Thanks !