Very hard to advise with the series of partially obscured photos. Best to seek ONLY IN PERON opinions...
Your modesty photos are limited for evaluation. You do not appear to have a nasal deformity. You should not worry about nasal collapse in the future. Your concerns about your nasal airway would be evaluated by a reputable ENT or rhinoplasty surgeon.
Hope this helps you.
The kinds of questions you are asking are difficult to answer based on your photos and history. That being said,I think your nose looks very good. Maybe slightly wide just above the tip. Breathing issues require an exam. Sometimes Flonase can help with intermittent swelling, drainage and difficulty breathing. If you are having intermittent issues it probably isn't related to a fixed problem. Se a surgeon and discuss it with them.
Inverted V deformity and valve collapse is what you appear to have but I need better photos to say for certain or an exam. This can be revised with cartilage grafts to open your airway.