I have an Olympus Stylus Zoom 115 DLX camera (point and shoot) and recently got back a roll of film in which nearly every photo was unfocused and blurry. I am not sure why/how this happened. The first 4 photos are perfectly clear, then the rest are blurry.
Did you cover the autofocus windows somehow accidentally (by your finger)?
My guess is the autofocus is not working correctly and the camera requires repair.
Yes, the first four pictures were in focus. It probably broke between the fourth and fifth pictures. Maybe just from age and not from anything you did…it is an old camera with plastic parts, old grease, and a low value relative to the cost of professional service.
While it might be possible to repair it, the cost in parts and labor will probably be higher than the cost of replacement. That was might have been true when it was almost new but out of warranty.