The only thing worse is not having a clue about the law and the process of righting the wrong, so to speak. The law is not complicated. You need to make all three prongs work for you or your claim is not going to fly. There is no such thing as the perfect case. There is always one of the three prongs you struggle with more than the other two.
Liability means fault.
In the vast majority of cases, it is a question of negligence. If someone acts with less care than a reasonable person would have under the circumstances, that's negligence. No one has to be an evil person or intend to do harm if they were not as careful as they ought to have been that's enough. More than one person may be negligent. In which case the negligence of each person is compared.