What helped me was getting speech therapy. The focus of which was to be OK with my stutter. If you’re not OK with the fact that you stutter, confidence will never come. I know not everyone can afford therapy so what you can do is just make random phone calls to businesses. Just keep making calls and stutter on purpose. Also you can take a clipboard into the street or the park and do fake random surveys. This will force you to talk to strangers. Just be comfortable stuttering man. Lastly, advice about talking to women. Women are people too. Approach them like you would if they didn’t have vaginas. If they like you, they like you, if they don’t then they don’t. Real life is not like the movies where you could say some magical witty lines and they fall in love with you. You want to attract the opposite sex? Be attractive to the opposite sex. You know what’s NOT attractive? Self loathing. Bad hygiene. Depression. No body wants to be around negative energy so leave that shit at home and go out and have fun.