Should I get a new phone

I have the option to “upgrade” my 13 PM to a 15 or 16 PM, my current phone has a 79% battery life, and something wrong with my camera that doesn’t allow for .5’s and says there’s unknown. Are either the 15 or 16 truly worth upgrading, or is it more worth it to fix my current phone. This really is the best phone I’ve ever had, and I’m a strong believer that the 13 pm’s are the best phone iPhone has ever come out with, so it’d have to take a lot to convince me to get a new phone