This game is disorienting and difficult to understand at times, and this is an intentional and important aspect of the game. There are a few walkthroughs on YouTube if you get stuck.

There is a glitch in the autosave feature that may result in the game, upon completion, repeatedly reseting to a point shortly before the end of the game, preventing the player from restarting from the beginning. To reset the game to the beginning, right-click on the Flash window and click "Settings". Select the local storage tab (the middle one), and choose to deny itch.io access to local storage. This will disable the autosave feature while that option is selected, and if you boot up the game with it already set to deny, the game will always reset to the beginning. You can se the option back to "accept" at any time to restore the autosave feature, though you will need to reach one of the autosave points before it will actually save your game again.