I bought some Arena Women's Rule Breaker Free bikinis, the price varies depending on color and size, some are a real bargain. They fit exactly like well-made Arena Japan Men's suits which are flat-front and tight and a size smaller than USA sizes. You can wear them at any beach as they look like men's suits, and wide enough to hold everything snugly.
https://www.amazon.com/dp/B07BJKMZT5/
Rulebreaker Real
https://www.amazon.com/gp/product/B077GNGYJ2/
Here is another Arena that got favorable reviews and photos only from Men! Too bad they don't have my size
https://www.amazon.com/Carbonics-Max...dp/B076J34J7Z/