The app data folder and files are automatically generated when the game successfully starts. Unless your system has a Recycle Bin to restore the deleted files, you'll need to figure out what is wrong with your system to get new app data files. I would recommend using the Debug mod (https://itch.io/t/1137280/debugmod-v1) and starting the game through a Command Prompt. Instructions for this are provided in the link. It will not fix your problems, but it should provide error messages to help figure out what it going wrong. Also, you don't need to create a new topic each time, it's a single problem so it only needs a single topic.