The problem? I cannot get a single, available, decent girl in her late 20s/early 30s to give me 90 seconds of her TIME.
Without understanding the situation fully, and as Guru has said, not knowing exactly what you are doing about the situation, I draw attention to the passage above.
This passage is a direct reflection of how
you view life, or at least your love life. You see a 'problem'. You cannot 'get' (i.e. 'make') girls give you their time.
Number one: if you see a 'problem', you see your life as incomplete without a woman. You are not happy just being you. You're starting from a position of scarcity, whether you accept it or not. All of these things are contributing and compounding your 'problem'.
Number two: if you're trying to 'make' women give you their time, again coming from a place of scarcity, you are trying to be the pick up artist, rather than focusing on being a desirable man, i.e. whether you realise it or not, you probably coming across as a thirsty lech in your encounters.
My advice here;
Number one, forget your 'problem'. Because it's not really a problem. Instead, reflect on your experiences and even if you have to, ask for some feedback from girls, if it's really that bad. If you have to go on a few dates with forty year olds just for practice, then do it. There are plenty of hot women in their forties these days; even fifties and sixties. A bird I know just turned forty, and she is easily still a 9/10. Easily.
Mst of all, stop relying on women for your personal validation. The primary factor in attraction, regardless of anything else is happiness and contentment. You don't even sound unhappy. you sound sexually frustrated. So if you have to get a couple of easy lays out the way, then do so.
Number two, lose the thirst. Listen to the words you use to describe your life. You don't 'make' girls attracted to you. Desire is not negotiated, only inspired. A girl is attracted to you or not. The only control you have over that is how attractive you are. To put is bluntly, you're obviously not an attractive enough prospect at the moment to even spin plates. That's the reality. So take a long(er) look in the mirror, and ask yourself what you need to improve.
To be honest, my few experiences with you here in the forum, you have been somewhat confrontational. So maybe that's something to think about.