If I’m an adult who wants to experience splashing around and wading round the pool, but whose swimming capabilities extend as far as doggy paddling to safety and floating on my back - what can I even do to have fun at the pool?

What do you do at the pool?

Bonus round: kind of out of my budget to pay for swimming classes, and available friends & family are nil. :c
But I borrowed a life jacket from a coworker, and could buy cheap floaties or a pool noodle.