>I can relate to that, sort of, I just don't think one should be supposed to fake feeling sorry or other emotions.
No one is suggesting that. if it's fake, it's not going to work. You need to actively take an interest in what the other person is saying.
Look at what you're describing. It's an algorithm for appearing interested, without any of the actual interest. Your goal here is purely your appearance to the other person.
And it can work. But the follow-up question is: what is your goal?
If your goal is only to get what you want, there are much more effective ways than this sort of insincerity.
If your goal is to have a meaningful reaction with the other person, there is no substitute for mindful presence.
If you're not actually interested in what the other person is saying, examine your won mind for why that is, and decide whether you need to make a change.
But the most important thing is to forget about how you're appearing to the other person. By definition, it removes the authenticity from your interaction.
Now that can be problematic, for a number of reasons. I'm someone who's authentic self has been rejected by many people I've met in life. The temptation is to try to work on how I'm 'appearing' in order to avoid that rejection. But it doesn't work that way.
It turns out I needed to find more compatible people, instead of expecting to be compatible with everyone.