ImageButton alignment - Android Studio

Question

Hello, I need to have an "arrow_back" ImageButton on my activity. I got the icon from the built-in icons in the Asset Studio.
In my constraintLayout I pulled the icon to the top left, but when I run the app on my mobile phone - the icon is located at top right.
what should I do to fix it?
EDIT: the opnly working solution is to drag the icon to the oposite side, and then it works... but its no the proper way for sure..