In some (all?) variations of a three way switch, either of two wires MAY be hot. if you are using Black/White wire, no combination is 'right'. It would be up to you to mark the white wire so ...

If you're certain your light switch is not part of a three-way switch system, then it is possible that the light switch was installed upside down by accident.

This no-frills, single-pole, on/off in-wall smart switch costs just 9 bucks; too bad Wyze doesn’t also offer three-way and dimmer versions. By Christopher Null Contributor, TechHive Apr 27, 2022 ...

In a three-way switch, two screws are the same color while the third is a different color. On the old switch, note which one is the odd color and match it to the odd color on your new switch.