Pathetic Battery Life on Iphone 11 Pro

I have an Iphone 11 Pro 256GB that is just over a year old.

I am terribly disappointed with the inferior/short battery life!! When I check my battery heath - it indicates a Max Capacity = 85% after 1 year??? This is ridiculous.

I haven’t altered my charging habits for the past 10yrs and my almost 9 yr old Iphone 6S still has a Maximum Battery Capacity of 88%?? How is this possible??

My wife’s old Samsung phone battery lasts almost twice as long as my ’NEW’ Iphone on a single charge?