How did you make those win/death animations in Gamemaker? (im really new to gamemaker) Like how did you get an animation play and then move to the next room when you finish the animation? How do you detect when the animation is finished?
There is a prebuilt Animation End you can use to detect that stuff.
I felt a really similar way when I first started gamemaker too (seeing people use all these tricks). I think there's a ton of tutorials out there that can help whip you up into shape to figure these things out.