Don't be too hard on yourself here.
The game was good and most of us gamers did not have game-breaking bugs but found an interesting setting in the world of SCP, a few good puzzles and had much fun with your game.Yes, there were minor imperfections (like me not finding the key inside the bible), but that was on me, cause I'm not looking good enough for things like this.
For the voice acting, I'm sure a lot of gamers here on itch would be pleased to help in such cases. What gamer doesn't dream of having his/her voice in a videogame?
I'm looking forward to play even more games from you, with 2 out of 3 games were good and the third one still needs to be played.
Keep going like you already do and I'm sure there will be even more fun games from you :)