Help me with position of guis in screen of any player?

I'm starting to develop in roblox studio. I'm having a problem, in roblox studio I put my GUIs, I define position. However, when in play, depending on the size of the screen, it changes position. How do I solve this? (Please tell me an example of how to position on any screen). Thanks!

https://developer.roblox.com/api-reference/property/GuiObject/Position maybe this will help you with gui position

Use scale and do not use offsets in the size of the Frame or any UI Element as scale helps the ui to be responsive for most of the monitors or screen sizes.