Agreed with the other posters here. How you use your phone will determine your battery life.
Example:
Person A rarely touches their phone throughout the work day. When they come home, they pull out their iPad and read on it until evening. Their phone sits unused for most of the day and evening - ending their day at nearly 90% charge.
Person B constantly checks their phone every hour of the day, has a dozen group messages on several different platforms. They take and send pictures by the dozens. Watching long YouTube videos is something that happens daily. Games? You bet. Person B needs to charge their phone before 3:00pm, and again before going to bed.
I am more of a Person A. My wife is more of a Person B. We have the same iPhone type. She usually has 2-3x+ the charge cycles I do after a few years of usage.
I’d look at battery health. If you have a Mac - look into coconutBattery - that can tell you your battery’s capacity.