Can I carry luggage on bike?

Excuse me, I was wondering if I might ask a question about transporting luggage while riding a bicycle. Specifically, I'm curious if it's possible or practical to carry luggage on a bike, and if so, are there any guidelines or recommendations to follow in order to ensure safety and comfort for both the rider and the luggage itself? I've heard that some people use backpacks or special bike bags, but I'm not sure which option would be best suited for my needs. Could you provide some insight or advice on this matter? Thank you in advance for your help.