From a person who has lived their whole life with a severe stutter please don’t give up. If therapy isn’t an affordable option for you I just wanted to share that practicing screaming (I’m into heavy metal) actually did more for my fluency than any therapy. THAT IS NOT TO SAY THERAPY DOESNT HELP, therapy offers a HUGE set of tools that you can use your whole life, but I will say learning how to scream and singing a lot really helped me a lot. Keep Using your voice :)