Go to Navarre Beach. Much less developed and 'touristy' than the Destins. I just got back from Pensacola Beach and though that was pretty excellent as well.
BTW i think that entire area (Destin, Pensacola, etc) is underrated nationally becuase it’s known as the Redneck Rivera but the beaches are really nice, better than anything in CA or TX (not saying much ) in terms of white sand and warm turquoise water.. but if you’re gonna go, Navarre is smack dab in the middle of Destin and P’cola, and makes me feel like i’m on a Caribbean Island, it’s so pretty and relatively isolated... PLUS being a Marriot rewards person for the last decade +, there is now exactly one hotel on Navarre Beach, and it’s a Springhill Suites by Marriott.
Someone mentioned Orange Beach /Gulf Shores, which is also nice- but i dont vacation there purely out of principle, becuase it’s Alabama... yes I’m petty af