Mine lives at home on WiFi all day(with5g off) and on 120mhz I'll get around 4.5hrs screen on time (which incidentally is exactly the same as what the reviews reported). Always find it amazing people here manage to double these numbers...!
Are you playing Genshin Impact all day or something?
My use is mainly Samsung Internet, Reddit and bits and bobs apps like Hue, Whatsapp, Gmail, banking. In the evening, I might play a few non-taxing games for an hour or so.