Hello rgremxyz! I'm glad you tried to find the all ends:)
'I'll deal with it myself' means that the one who wrote these notes in the notepad is tired of the fact that you constantly start the game again and he decides to do everything himself and breaks the game button
The game has an ending with a bloody lock and a clean one. both endings mean that the girl is free but the bloody lock hints to us that something is wrong when a clean lock means a good ending
"I actually didn't have time to make the game and therefore cut a lot from it, because of this the game looks a little stupid":\