iPhone 17e back camera lens cracked, asking about repair options

I bought an iPhone 17e this august and last week it fell off my pocket and the lens of the back camera cracked. I didn’t expect it was so fragile. I don’t have Apple care and I’d like to know why for this kind of accident is necessary to replace the entire camera corpus, or it is a damage that can be fixed replacing only the lens ( because the camera is still working)..