Roaring screams are more realistic for painful voice.And Lazy and weak voice is not suitable for pain voice in my option.
I found these sound for my gmod mod project.Just listening and tell me your feeling.
https://freesound.org/people/thanvannispen/sounds/9432/ male_Thijs_loud_scream.aiff
https://freesound.org/people/jorickhoofd/sounds/178410/ Screams of Frustration
https://freesound.org/people/natemarler/sounds/338938/ human male yell.wav
https://freesound.org/people/XfiXy8/sounds/467283/ Horrified Female Scream.wav
https://freesound.org/people/DigestContent/sounds/449702/ Female Scream
https://freesound.org/people/FreqMan/sounds/42847/ psycho scream 1.wav
https://freesound.org/people/XfiXy8/sounds/467293/ Female Scream 2.wav
https://freesound.org/people/Volonda/sounds/439517/ Girl_Screams_Raw_File_wav_v1.wav
https://freesound.org/people/GreatNate98/sounds/353086/ Weirdo Scream.wav
https://freesound.org/people/JohnsonBrandEditing/sounds/243377/ human male scream 1
Character voices of Happy Wheels: https://www.youtube.com/watch?v=z2yzDHT3_-A and Left 4 Dead https://www.youtube.com/watch?v=pCg1j5rkBO8