Changing screen size ratio messes up my UI

I countered this issue earlier today. I was checking if my UI was working properly as intended, when I found out that the UI was only being shown as intended on 16:9 screen size ratio devices. I’m pretty new to UI designing and I had no clue what I was doing. I tried my best to fix this issue for about an hour at this point, but I still have no clue what I’ve done wrong.

Here is the link to the video: Link

If you have any questions please let me know!

Are you using scale? or are you using offset?

I’m using scale instead of offset!