Dating profiles are, by their nature, quite restrictive. You are often forced to reduce your life down to the ticking of a few boxes and the odd free-text opportunity to sell yourself. One suggestion is that you carefully avoid adding preferences for any prospective dating match that you cannot uphold yourself.
Just because a single woman is using a dating website, it absolutely does not mean she is so desperate as to not filter her messages and respond selectively.
Women get many multiples the rate of messages men get on dating site and is she hasn’t responded to you after you have extended her your patience and waited a reasonable amount of time, maybe you should just accept that she’s just not that into you and move on.