My problem is that I am unable to tell what I did wrong after I got rejected, I don't know if it was something I said or the way I was standing, or if I was just not her type.

like I want to know what I did wrong and what should I change.

First thing: people go to the bar to have fun and drink (most of the times). For men and women, fun can still be had in the thrill of hunting and being hunted.

At the risk of sounding like I am god's gift to women, here's some pieces of wisdom I've picked up.

1) Don't go to the bar to pick up a girl. Go to have fun with friends.

Girls can smell if you're creeping around looking for a girl. They are like tracking dogs, and they can smell whatever we have in mind sometimes. They smell fear too by the way. But seriously, if your plan is 'to score some chicks' you play a losing game.

2) Don't start the conversation with an opening line, or a pickup line. Don't even offer to buy them a drink. That is an opening line.

Why? A line like that is instantly recognized as 'all he wants is to take off my panties'. Unless that is what you're looking for. If that's what you want, fire all the one liners you have. You will get exactly the girl you want. And no, she is not long term relationship material.

Instead, make an actual conversation. Does she have shoes/boots that deserve a compliment, is there something going on at the bar you can talk about, has the weather been exeptionally good or bad? I mean, I could give dozens of examples (and a lot fo them would be shot down by the forum trolls for sure) but the main thing is to have a smooth conversation.

Again, the problem is that you assume that you did anything wrong at all. If a woman rejects you when you approach her, chances are it's more about her than about you.

I think your advice best applies to guys whose daily existence includes incidental contact with unattached women. The rest will, by necessity, have to be a bit more pro-active.

WIP,

It sounds good in theory, but what if I just don't cross paths with any women while I'm doing what I enjoy doing? Should I be resigned to going on this way for years and years? If you never met any available men in the course of your routine, how long would you go before trying out a different schedule?

I think your advice best applies to guys whose daily existence includes incidental contact with unattached women. The rest will, by necessity, have to be a bit more pro-active.

Don't leave the house with the goal of meeting women, but definitely get out of the house. Don't go to a drinking establishment with the sole intention of meeting women, but if you are going out for a drink anyway, you might consider which establishments are more conducive to socializing. Don't act desperate, but don't be passive.

All it takes is a little self confidence.

If I go to the bar, I still need to be proactive. If I don't get up to talk to that cute girl at the bar, someone else will.

WIP;
And there is the real nub of the matter. I think if you lived in a situation where mostly everyone else was paired off, except you and a few other unattached women, and you literally did not run across available men, I think you WOULD eventually notice that fact after a couple of years, even if you weren't looking for a partner.

I think the differences in the social dynamics between large populous communities and really small un-populous ones can really only be appreciated if you've experienced both.

I've lived in some of "emptiest" parts of the Midwest, places where the only places open after 6:30 pm are the gas station/convenience store and the local saloon. Once a guy gets used to the idea that a 40 mile drive is necessary to even SEE an unattached woman, it's hard not to have the "intention" of going places and doing things for the "purpose" of meeting women. Especially when he is being told by his paired-off neighbors that he is single because he's "not trying hard enough" to meet women.

Remember the old saying about sex(in the broad general sense) and money: If you've got enough, you don't think much about it; if you don't have enough, it's hard to think about anything else.