Why don’t people say hi?

The number of times I’ve said, “Hi, how are you?” And have gotten no response is comical at this point. People don’t even say, “have a good day”, or “you’re welcome”, when I say thank you. This city feels so dead lol

I’m not asking for a life story. Just trying to have decent baseline manners. I’ve lived in a lot of places and Seattle the only place where people are like this

EDIT: I’ve traveled to over 20 countries, have lived internationally in 3, and have lived in many US cities of varying size. I’m not a boomer. I’m 32F who likes saying thank you, you’re welcome, hi in passing, have a good day, head nod, hand wave, small smile, etc. I do so in appropriate social situations, not in the middle of DT and not to sus folks - need to get that straight

There are two buckets of responses - people who give unfriendly Seattle vibes, or people who agree with my sentiment. It boils down to Seattle not being my place and I will be moving soon. The cold, lack of manners from the people, is the main reason. Have a good one, guys! Thanks for the perspective