I’m a defender of small talk. It’s the MVP of connection; you are at least talking to another person, mutual acknowledgement. It’s where relationships begin. It’s where you and the other can safely feel out the space of shared values and what’s top of mind: sports? Work? Family?
Oversharing is perhaps defined as sharing too much too soon, when you should still be doing small talk.
Sometimes people say they hate small talk but complain of the difficulty of making friends. Start by learning how to have light conversations. Keep talking. Depth comes naturally with time.