I would say your lack of friends is probably more pressing of an issue and likely related to your lack of relationship experience.

I offer you the same advice as for men. Work on friendships before you worry about intimate relationships. Friends can become relationships, but ideally they don’t and instead you meet people through friends who can vouch for you to their friends that your not psycho or a waste of someone’s time.

Ever try hanging out at a crowded bar? Anywhere where you have to show id to enter should help.

Also, do you have female friends? You should be hanging out with them and doing things where you meet people as a group.