This is going to sound harsh but is honest as I can give it mate,
First of all get out of the self pity mode, like you said you're 23 years old.You're still really young and the world is your oyster. There's no point beating yourself up about the past you cant change it but what you can change is the future. What do you want to study, because for a large proportion of professions you can take series of online courses or internships whilst working part time allowing you to make some money and gain some skills. Going to university isn't a necessity to do well in life, granted it may help propel you into certain professions but you can reach goals and success without going to university.
But what Course and uni would you like to go?