Can people tell you have an impendement?

Can people tell you have an impendement? People just assume I’m nervous or insecure or don’t speak the language (I’m black in Europe). I’ve lost friendships and work opportunities over of this. It’s been regressing but I hope it will get better soon. I’ve never gone to speech therapy and I stutter because of childhood trauma. I have a very soft voice, I can’t control my tempo, I go high-pitched unpredictably, I struggle with pronouncing Rs, and fumble a lot as well. All of that combined I just end up sounding mentally disabled. Sucks so much because I likely wasn’t born with this. I hate this.