First of all, dude you are 5'8.5" the average in the US is 5'9" as far as i know, you are not short, you are average. Or is someone with an average salary in the USA considered poor? If you were 5'4" or so, I would understand your problems, come on.
I don't want to say that height is unimportant, that's not my point, but in my experience is, it is only a bonus if you are generally attractive in the first place. No woman will turn round her head after a 6'4" average Joe, but definitely after a 5'9" Chad.
If you want, wear 1" lifts and make sure you don't wear shoes that are too flat. Anything more than 1" will be strange to run.
I know dozens of womanisers between 5'8" and 5'10" and dozens of hopeless incels over 6'1" and more.
I also really never see a 6'4" average joe with an extremely attractive woman. Most of the time, couples are more or less looksmatched and the man is the same height or taller, but I've never seen a generally unattractive man get women just because of his height. At least here in Germany, but the USA is weird when it comes to dating anyway.