You've provided two very long videos. Please provide the exact time in the video when the scrolling happens so we know what type of scrolling you're referring to.
Maybe this thread will help: https://community.clickteam.com/threads/107922-Changing-infinite-parallax-background?highlight=scrolling+background
(I regret making this video at one point, it's reminds of my personal Vietnam that I had a few months ago, long story)
https://youtu.be/QxeCnLQXw-o this here
I believe he is using a camera movement or frame position to get that effect. Probably tying in the mouse movement to the camera movement.
Create an object
Always move it to the mouse position
Centre the frame (scrollings under storyboard controls) on that object.
As the mouse moves around and the object moves around, the viewport should also move.
There are also camera objects in Clickstore - I've never used them, so not sure if they work better.
For other types of easing, I would recommend to use the easing object, it has a lot lerp functions (check it's help file and built-in examples from Help > Examples > Easing to know how to use it)
Also just a thing that I see repeated a lot, you probably are new to the engine, I would recommend starting out properly first before making your game
- Go over the tutorials from Help > Tutorials
- Watch some good tutorials, like the ones by AlmightyZenTaco (NOT FNAF ONES THEY ARE ALL BAD)
- Check the documentation from Help > Contents
- Understand how events work (they are explained in Help > Contents)
- Play with different objects, check there help files and examples that come with them (most objects do)
- Experiment a lot with different objects, various engine features and editors, object selection, fastloops and foreach loops, groups and comments..etc
- Search the forum or ask for stuff on it (but do not have very specific stuff like how to make camera movement like fnaf) there is also the discord server (pls don't ask for fnaf questions if possible though, we are burnt out from them): Click Converse Discord Server Invite
Here is a basic example using only built-in functions.
Frame 1: the view moves when the user clicks
Frame 2: the view moves with the mouse, but with a delay and you can change the delay as you wish.
I used rendered graphics to show the 3D effect.