It's true. Men are not attracted to the same things women are. I would choose the cute waitress working at Mcdonalds over a woman who speaks 7 languages and owns her own business.
Men really aren't attracted to accomplishment, social status and wealth as so on. That's a female thing.
It's not that knowing 7 languages and having your own business makes a woman less attractive, it's that it has no effect whatsoever. Men don't care about these things.
So feel free to learn new skills and improve yourself, for yourself, but know that it will not make you more attractive to men.
To make yourself more attractive to men, the most important things are to take care of your physical appearance and try to have a light, free, fun-loving spirit. Honestly, nothing else is necessary. It's fairly straightforward.