Stuttering and my inability to pronounce letter "r" is ruining my mental health

Stuttering and my inability to pronounce letter "r" is ruining my mental health People make fun of me for talking awkwardly. I can't pronounce some letters and I stutters because I get nervous during social interactions... I feel like if I never had these issues in the first place, my school life would have been much better. Idk what to do. Doing speech therapy exercises at my age makes me feel pathetic Even little kids speak better than but I have to learn to speak even though I am a teenager