iPhone 16 Pro battery draining quickly

My iPhone 16 Pro battery drain drastically. Especially, on a hot day. Had 3 visits at the Apple Store and the Genius Bar Technicians are not able to conclude the issue as all there tests come up with positive results. But it is really concerning for me as I upgraded due to mainly battery issues in my iPhone 11. I tried all the steps suggested by the Technicians, but do not see any improvement.