Alright, I really tried but I'm not sure I understand it. After setting the controls, I can enter the grey tear, move around and talk to a couple of people and then I run out of places to go and get stuck into the black void from the start but I can't interact with the tear again. Can't seem to get to the ending choice unfortunately. It might have needed a little more guidance but good job!
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So the path is certainly not always obvious, and couple of them are hidden away but in most you should still be able to find a lot of them. One suggestion i do have for exploration would be to just pick a direction and go. When you walk in the Black stuff, the counter for your changing only happens when you change directions. So you could probably make it quite a bit with just that. Nearly each static camera has their own dialogue scene.
As for getting stuck at the start, that happens when you run out of playable memory scenes due to them being forgotten. There would still be a dialogue scene there if you wait a bit.
But yeah Thanks for playing.