How to make the user's interface to sway during player movement

[Vespherius (Ves)]

1. What do you want to achieve?
   I believe that most of you guys knows the new released game called “Jujutsu Infinite”. One notable difference is that their whole interface sways around during the player movement, which I believe that gives a nice effect during the gameplay. Basically, I wanted to achieve the exact same effect. Check the video below for reference.

Video:

2. What is the issue? Include screenshots / videos if possible!
   Honestly, I don’t know where to begin from Therefore, I need someone to give me a path to follow, at least basic instructions.

3. What solutions have you tried so far? Did you look for solutions on the Developer Hub?
   Yes, I have looked on several. However, most of them use parts that are positioned in front of the camera with a surface GUI, and I’m pretty sure Jujutsu Infinite does not do that (Correct me if I’m wrong). Plus, I don’t know if the effect would be as good.

Posts that I already checked:

Moving screen gui with player movement

Hey guys, I’m trying to make a gui move with the players movement as seen in this game, Untitled FPS Game DEMO, I’m not sure how they did this so if anyone can help, please tell me! Here’s a video if you dont want to join the game,

Moving screen gui with player movement

Sorry if this is in the wrong category but, I’m trying to make a gui on your screen that moves with the characters movements like in the game Untitled FPS Game DEMO. I’m not quite sure how they did it, so if anyone knows, please tell me! Thanks.

GUI sway effect when moving the camera

I have seen this in many games, when you are in first person, when you move your camera the scope has a like a bounce/sway effect. If you know how to achieve this please tell me. Video of what I want to achieve: [devforum post]