Maybe you should try “medium talk” so you don’t get bored and other randos don’t get weirded out. After a comment about the weather you can say that bc of the nice weather you were hiking/sportsing/otherwise hobbying in [location], and wondered if they’ve been there recently. Or if the weather was shit that you were indoors doing whatever hobby and ask what they tend to do in their free time.

Hobby talk can basically be as superficial or deep as you need it to be, so the conversation can progress from there as needed.