This is not a settings problem. The color shifts and fogging indicate a problem with the film and/or the camera. It looks like a combination of things, IMHO, as someone who shot film for 20 years.

Suspect 1 is old film: it's possible the chemicals on the film were old and less sensitive. Different chemicals aging in different ways would account for color shifts.

Suspect 2 is unwanted light: If you (or your relative) inadvertently opened the back of the camera while film was loaded, you would fog the film as in your first shot. Then, when the lab went to print the image (or scan, in your case), it would try to normalize the exposure to D65 grey and you would end up with a grainy shot that is mostly mid-tones.

If the camera was dropped at some time, and the light integrity of the camera compromised, it would fog the entire roll in weird ways (depending on what light got in).

The second shot looks like it was taken at the beginning of the roll. You can see the film "rebate" with the up arrow (used to orient the negative strip in the darkroom). The tail end of the film doesn't have light-sensitive chemicals on it, and you see an uneven transition to a frame where they start. You can get this by not winding on the film far enough when starting a roll. The right-hand side looks fogged too, as if unwanted light was present. The perfectly vertical transition could be a result of how the film was wound around the take-up roller so the light only affected one part of the image.