More to the point curved end bracelets, I have just realised watch bracelet manufacturers who sell curved end bracelets do it wrong. I could own a 36mm watch and you may own a 50mm watch. Though both are circular and wear a 20mm strap. The curved end might not fit.
A possible solid would be the watch company’s include/offer curved end links for their products.
Bracelets with fitted end links are watch specific in a lot of ways, there are too many variables to make generic bracelets practical. You just can’t buy a bracelet that wasn’t made for the specific watch and expect it to fit.
If there is an option to buy a watch with a bracelet, you should do that. If there isn’t, you should assume you can’t get a bracelet with fitted endlinks for that watch unless it’s one of the really popular models that gets third party model specific support.