Lens will not focus, it's not dirty

My sony w55 7.2 doesn't focus. i bought this off ebay to replace the original one i had previous that fell and now won't turn on and the lens is stuck in midrange. My new one that I am having trouble with right now is the one having capture issues. It picks and chooses when it wants to focus on an object/person in frame.

When pointing the camera at an object or a person it will not show a focused version on the screen. I thought initially it was because of sun exposure but it happens at night too. It doesn't focus on people and then randomly focuses. Distance is not a factor here because it displays a blurry image too when I am up close.

The camera was not having this issue when i bought it off ebay and it has not fallen.

What is it and how do I fix it without re-buying the entire camera again. (I still have the other broken one as well if there is an option to merge the two cameras!)