Pool Patio Chipping

Welcome to TFP.

No easy answer other than to strip the entire deck down to bare concrete and recoat it.

Looks like the previous owner just took an old concrete deck and had it skim coated with a cement/sand(aggregate)/color mixture. Basically like slapping a coat of paint on moldy drywall to make it look new enough until the ink on the check dries and they’re long gone.

As Alan said, you’d need to strip the deck using sand blasting equipment (expensive and messy … be sure nearby structures are masked and protected) and take it down to the underlying concrete. What you put on top of that is your choice but a good acrylic overlay, like KoolDeck, could then adhere well and last many, many years. It’s all in the surface prep - get it down to the underlying concrete and see what’s there. Then look at recoating options.