Concern) Teeth whitening

It would be so great if my teeth were whiter when I smile. My confidence is decreasing because of my teeth.

I have had orthodontic treatment, but I heard that teeth whitening can cause sensitivity, so I can't do it easily. Even after whitening, I have to avoid certain foods, which makes me less confident. I'm most worried about whether my teeth are not too sensitive, and I also want to know if the cost is manageable.