>>1650945you sound dumb.
go to decathlon and get pic related (or order it online). It's shit and boring but there's nothing inherently wrong with it. It's a bicycle. You can ride it in the big city. It's most likely going to get stolen anyway.
I'm going to be blunt and tell you you aren't really looking for a used bike, any old bike will end up being a project (therefore money pit), and you don't want that having never even owned one before.