Do you really mean it when you say you are looking for a girlfriend?
No matter how old you look a good looking guy is a good looking guy!! For some girls the older, the better as well!
Where do you meet girls?
At the gym, a sports venue, games or at a coffee shop, or pub, or bar, if you try to frequent there at the same time every day or whatever.
Also, if you have a pet, this is another good excuse to talk to girls in the park .I am sure you know all these.
But, I was wondering, have you by any chance developped any off putting attitute or look arrogant or selfish? Because this is a sure turn off. Sometimes, handsome men give out an I-am -the-only-one-and-i-am-difficult- to- approach signal. Or girls are scared to get really close because they think that handsome men are rarely a one- man woman. So try to work on the opposite of the above, if you think you may give out such an image.
Because, I am sure you know, that the kinder, the politer, the more generous and humorous a man is, the more girls he gets. And try not to look at pretty women , when they pass by, because this is another turn off point to any girl who has dared go out with you....!!! Ah! and don't talk about your past successes with women either. But then, I may be old fashioned!