I'm old, but it took a lot of time to network/socialize. I know there's books/material to socialize now. I have learned to grey rock, and just go neutral with giving a response to most situations.
This is a learned thing. No one teached us this back in the 80s or earlier. Life isn't easy, we learn as we get older. Yes, it's hard, but if some random person asks about your day, just say "great, how about you?". Put the focus back on them. Let them talk. Just listen. Oh, their grandma passed away last week? "Damn, I'm sorry to hear that. Let's remember her legacy, and know that she lived to her fullest."
We are all still animals at the end of the day. You can make mistakes! Learn from them, and move on. Learn as you go.
"And here is the guest room! With it's very own entrance! Your guests can come and go as they want and it doubles as a patio AND a place to store your car! We are not responsiblefor carbon monoxide poisoning."