Just be you, my man. I used to struggle with actively searching approval until I realized that some people will click with you, and some won’t. That’s just the way it goes and IMO there’s nothing inherently wrong with that. Depending on where you are, you’re incredibly fortunate to live in a period of time where the overwhelming majority see you as lesser just because you have a speech impediment. Not all women are the same and when somebody that is worth your time and energy comes around (someone eventually will), they will see past what’s on the surface and would be delighted to get to know you.