The short answer is it will depend on the facts and circumstances of your case. A lawsuit need only be filed if you and the party responsible for your injuries cannot come to an agreement about any compensation you are seeking for your injuries. If you and the opposing party can reach an agreement that will satisfactorily cover your medical expenses, lost wages, property damage, and pain and suffering, then there may be no need to resort to using the civil court system.
One thing to keep in mind is that most lawsuits do not go all the way to trial. The vast majority of civil cases settle prior to going to trial. So while you may need to file a lawsuit to preserve the statute of limitations or because you and the opposing party weren’t able to come to an agreement outside of court, it doesn’t mean that you will necessarily be going to trial.