Nose Cartilage Dented on One Side. What to Do?

My nose was damaged in a sporting accident, and ever since then the cartilage on the left side has had a noticeable dip in it. The left side also feels softer compared to the right side, which feels harder and smoother. Whenever I touch the left side of my nose, the dip gets worse. Also recently I started having the same situation with the nasal tip on the left side. It became less pointy and gets worse when I touch it.