707s good ending is a pain

I cannot figure out where I went wrong. This bad ending jumpscared me so bad LMAO. the route was going really well and Saeran faked us out and took seven away </3. I dont know which ending that is specifically (i am new) I'm gonna look at some more guides but even reading the guides I can't figure out which bad choices I made. Also irritated af because I was too confident and didn't save so now I have to start at day 5 UGHHH.