Judging from your description, the problem is nothing more than the following:

If there is no trauma, it is likely that there are some growths in the nose, such as lipoma, lymphoma, powder tumor and so on.

These things have changed the shape of your nose tissue. Of course, speaking of which, you don't have to be afraid now. This kind of growth is very common, just like the acne on our faces. Just go to the hospital for a minor operation, which may only take about 5 minutes.

Of course, the above conclusions are only inferred from your description. I suggest you go to the ENT department of the hospital and let the doctor touch it.