Really, for most people is basically like reading a story that is foreign to them, is like reading a dramatic book where not everything is happiness, therefore you do not project yourself into them nor do you empathize.
but then there are people who do have this fetish and more or less look for this feeling
Netorare is more than a simple act of infidelity, but the fetishization of jealousy and other negative feelings commonly associated with it. is usually portrayed from the perspective of someone losing his significant other, in order to delve deep into the jealousy aspect of the fetish, however, for story purposes might switch between multiple POVs and also portray the events from the perspective of the stolen.
As a recommendation, if you play this type of game and you do not have this fetish, basically do not project yourself into the game, the protagonist is not you, you are just reading a story that has nothing to do with you.