This may sound really screwed up but maybe a start would be to stop looking for "a match" for now. Don't get me wrong, finding love in the long run can be a goal of yours, but I noticed you said something about not being able to find a match through online dating.
I personally think that the match and profile stuff on online dating doesn't tell you enough about what someone is really like in person. I've had situations where women were entirely different in person than they sounded online.
If you talk to anyone who has success through dating, they've almost all been on many dates or had many relationships or have talked to dozens to hundreds of the opposite sex. That's just the way it works, you usually have to deal with a lot of attempts at dating people until you find one that you want to be with long term.
I know it sounds weird, but trial and error is what everyone else who has relationships seems to go through to get that marriage level or whatever.
I admit that I had chances at long term relationships but I rejected the women due to my dislike of what they look like. The positive thing is that I had some shots, so I've headed in the right direction.
Like Mikey mentioned, you have to find some way to get out and meet people.
The big thing I see in your post, Motherwolff, is that you don't have any friends and you aren't meeting anyone in person through online dating. So, that means you aren't meeting anyone in person, right? Well, if that is the case, then it's impossible to meet anyone if you keep doing what you are doing.
We really have two options. Either go out to social events (examples: softball, church, kickball, bars), or meet people in person through online dating.
I also am having trouble getting in a long term relationship. I know how you feel. It's a lonely existence. I also know the reason I'm in my situation is due to me not going out enough.
It sucks because I know what I'm doing wrong, but I'm so shy that going out and approaching women is something I can't get the courage to do over and over again. Not having friends makes it much harder to go to bars and other social events for me.
The "easier said than done" addage is so true. I feel everyone's pain here that can't get in a long term relationship.
We must keep believing! Maybe we all find someone.