Hi I'm a male 23 year old. I'm very depressed because I can't get a girlfriend.

I've been with girls before, sex, very short relationships and have had many female friends. I'm a bit of a nerd but also sporty. I'm tall 6"3 and skinny. I'm above average at nearly everything and was bright and popular at school. Tons of girls liked me but I was scared of getting into a relationship for fear of conflict with another male (I know, stupid).

I really just want a girlfriend to lie in bed with and watch Netflix.. I've still got tons of drive but am stressed. Having a girlfriend would push me to achieve my goals, I know it. Not that I need someone to nag me, but someone to achieve for.
I don't want a girlfriend tomorrow or the day after. I want one right now. I feel like screaming and fighting. I have half a mind to go to Afghanistan and become some sort of mercenary and get my head blown off. So yeah I keep getting feelings of wanting to kill myself. Started smoking and drinking tea to help. I've been getting exercise for ages, football, just got a personal trainer. I am probably not getting enough exercise though. I'm very energetic.

So I've got a good job, am tall, quite well educated, well spoken, friendly, funny, popular and dress quite well but I always just fail at wooing a woman.. I must have a serious mental deficiency.

Before I got this new job, I was dating a lot of my coworkers and loving life, after moving to this city for my good job I can't meet people soon enough. It's taking too long to build up my social circle. At my old job I finally broke through some barriers and asked loads of girls out. To my surprise it got easier and easier and was going on multiple dates a month. I still can't believe how easy it was. I was in a good social circle there.

Got flirted on in a shop the other day.. Didn't even ask for her number. I have some sort of block.

It's a catch 22. I'm so desperate for a GF but they can smell the desperation.

If I deepen my voice, go to the gym, act confident/manly and and do some other things would it really help that much?

Help please!