Very little that you can do so.
I would personally recommend that you shoot RAW in future as over exposures such as yours can be easily fixed.
I know that RAW will also use more memory space but it’s a small sacrifice.
Looks like you used a longer shutter speed too which wouldnt help with the
sky, a ND graduated filter would have helped, but very little can be done in
post processing really. Nice shots though really like the elephants having a
bath….nice one.