Where to buy go pro mounts that don’t snap?

These are the mount types I’m required to use on my go kart to mount a camera https://www.ebay.co.uk/itm/406331789327

I had one snap at my latest race at buckmore park. Very bumpy track especially when driving faster karts like rotax. Completely destroyed my insta360x5

I don’t want to run another official go pro plastic one. Ideally would like one made of metal if they exist? But obviously the bottom part needs to flex so I’m not sure how that would work.

The karts I race have a string attached to the kart. However I had the string tied to my go pro mount, not the camera. so when the mount snapped, the string also came off, so the camera went flying. If I can’t get a metal mount of this style, anyone got any idea of any attachments for an insta360x5 that could be used as a tie down point for the camera?