Looks almost exactly like Mercy, not that im complaining.

So despite Hotel Ambrette existing, designating the place as a popular tourist town by Pokemon game standards, she can't spot even ONE male on the whole beach who's up to her standards.

That means any males who are actually interested after seeing this almost certainly aren't up to her standards either. Well, no point bothering with giving this any notice then.

Alternatively, she doesn't want to approach any males she finds acceptable. This could be from fear of rejection or being confident that they'll come to her instead (i.e. that they are easily attracted to her AKA easily-played and thus less appealing than they would be if they didn't think much of her).

GOOD LUCK WITH THAT!