Deviated Septum Prior and Now a Slightly Broken Nose. Is It Time to Fix This? Worried About Risks.

There is almost no risk of serious problems with a rhinoplasty. Over the past 35 years I have never had an infection, bleeding, etc. I tell patients that I'm more afraid of what they will do to injure the nose. You should have an excellent result with the removal of the hump, etc. if you see an experienced rhinoplasty surgeon.

It seems like you would benefit from nasal surgery for functional reasons, to improve the breathing through your nose and any aesthetic concerns, if you desire.  You need to seek out a board certified specialist who can address the underlying anatomy to address the nasal collapse and improve your nasal breathing.