Public pools are just weird. There are a bunch of people swimming in the same water hole, many of them strangers with one another, while others sit on in beach chairs and such getting their tan on.
I went to a public pool, not to swim myself, but to watch a younger relative who couldn’t be on his own. The pool was super busy and there were no beach chairs left and I couldn’t find a place to sit because no one else was sitting on the ground so I just sat by the gate to the pool, which I discovered was also right by the garbage can so as I sat there struggling to take off my tennis shoes (because I forgot to bring sandals with me on this trip) and swatting away the flies that thought I, too, was garbage.
But then some family who was leaving asked if I wanted their chairs and I graciously accepted.