olympus TG-630 not focusing

I have an Olympus TG-630 that has never focused properly. The focus is fine when you turn the camera on and then after you try to zoom in on something it loses focus and never recovers proper zoom and focus.

I contacted Olympus but they said it was too old to repair and they no longer had parts.

Any idea what might be wrong or what I could do? I know I should have taken care of this a long time ago, but I had put the camera away (since it never worked properly) and honestly forgot about it until recently….