I still don't fully understand — if a low-bit privkey public key is exposed, how could someone potentially derive the private key from it? Could someone please explain how that's possible?

As an experiment, I create privkey low-bit is there anyone who can try deriving the private key from this public key: 02e6ccb35984820aeef916e1d5585ca5f39e3d39bef71bdd845227933cf8b46d9f