Is that what end Loop button does? I had never touched it, because I was too focused on trying to delete the save files from my file manager. Also not being familiar with how save files work on itch was my own fault. Because by not having researched anything, I added to my own frustration. Again, sorry for any headache I’ve caused you.
I'm more concerned for your poor PC.
At the end of each weekend the loop resets and you play through it again making different choices and unlocking corruption options for the various characters. The end loop button takes you to that menu instead of you having to play through the rest of the weekend. You will always have access too all the content in the game depending as it is unlocked based on what corruption levels you have set (Which can be turned on or off).
Although if you did want to experience the game from scratch again selecting new game on the main menu will do that.
The game runs on an engine called Ren'Py which handles all the saves and basic functions. So that will handle where the files are if you need to poke those again.