I'm not really sure what you're saying here. You get too much female attention, or too little?
Personally I get too much, but hey, just enjoy it. They're buying you donuts, hell yeah. "Hey, I know what would be great, buy me a pizza". Just be a bit more selfish. Its fun. And cheap. Many going after you at the same time? You know what'll help you out a bit, get them to compete a bit for you. Don't let them know you like either more than the other. Its great fun.
And on the other hand, if you're getting too little female attention, don't fool yourself into thinking they don't like you. Most guys have the opposite problem, be less modest. Know they like you, then you can enjoy it a bit more. Hey, try hitting on girls and you'll understand when they dig you or not.
And as for alcohol - normally my advice would be to get completly hammered and enjoy it, but I think thats your problem here. Most people go a bit weird when they get drunk. Except me, I don't change aside from walking and talking funny. Anyway, laugh about it. Don't take things so seriously. When you're drunk, obviously something is bothering you. You'll know better than me, but sort that out. Last time I got drunk I needed 3 people to hold me up. Was pretty funny actually. Got some girls and I couldn't even walk. Obviously had to ask my friends the next day what happened, but you know its a good night if you need other people to help you remember. Just got drunk, walked about, couldnt walk, explored the garden (crawling) and went home. Standard really.