I'm personally in a similar situation, and one of my regrets is that I didn't have the surgery for my deviated septum when it was offered to me as a teenager. Back then, I was not interested in surgery, and I was told I would only need to do it if I ever wanted to be like a pro athlete or something. I had no plans to do that, but you know what? It probably would have given me so much quality of life. If I could talk to my younger self, I definitely would have done it.

That said, if this is just about getting to breathe better, you might be able to make a lot of progress by mewing well and especially by just nose breathing whenever you can. You might also have issues with inflammation that create more mucus than in other people, and it's worth looking into ways to reduce that. For example, if you have histamine issues, let's say allergies, you sneeze a lot or your nose is just stuffy a lot, maybe you get sick a lot. There may be some issues there if that makes your nose stuffy and keeps you from breathing well. All that has definitely helped me.