I live on the east coast of the United States - along the Atlantic Coast - and I can tell you that there are plenty of amazing coasts along this Coast. Myrtle Beach is one of the best beaches along the east coast. Sandy beach has good water when you’re there during the prime season. However, there are other beaches that are good along the Atlantic too.
Some countries that border the Atlantic Ocean include Cuba, France, Spain, Jamaica, and Venezuela. While some of these countries don’t keep their coastlines pristine for good tourist beaches, there is usually at least one spot in a country with a water border where there’s a good beach. Sometimes, you just have to look around and do the research.