Well phone usage won't really affect the battery much but gaming will because that generates heat and we all know heat is bad. In any case if its just a few minutes here or there and nothing substantial then charging your phone 4 times a day is definitely not normal. Over the weekend, I played pubg mobile for about an hour, shot about 20 minutes of 4k 60fps video, phone calls, maybe 30 minutes worth of youtube and I still had more than enough juice left at the end of day, didn't have to recharge once.