Battery draining rapidly on iPhone 16 Pro Max

i currently just got a new phone which is the iphone 16 pro max and i usually had this problem before with my old phone the iphone 13. I thought when i got my new phone this problem will stop since it’s a new battery. My phones battery runs super slow since its the 16 but i just tried to see if it go down slower if i put low power mode and in 5 mins my battery went done 10 percent which is crazy because ive never had my phone go down that fast. This is incredibly annoying because i just got this phone, Please let me know if there’s anything i can do to fix this problem!!! thank youuu

[Re-Titled by Moderator]

Original Title: My battery health seems to run faster on low power mode