Making a notifications screen

I made a screen in which whenever i press a button an image is instantiated and becomes the child of an object. After that is set i adjust the scrollbar limit by getting the transform rect of the container and increasing its min offeset. This allows me to Spawn and expand the scrollbar limit equally, however the way it Works i'm spawning images Always below the last one spawned, i want to be able to Spawn the object as this

this is my code, i've tried using FOR to get their transform.position and lowering them, first spawning a new one but that hasn't worked, is there a way to make this possible? I need it to start from the top and Always Spawn the latest one on top and sending the rest lower below