I do think at some point it is more weird to not say hi when you both notice each other I think ur job as a person in the world is just like, to be nice. Not having “good vibes” or whatever. Going up to someone and being nice and starting an exchange is always something you can control. Not everyone is for each other, but if you go up to someone and be nice, maybe there will be a vibe, and maybe you’ll like them!