Hello
Even with loose adhesive the display should not lift from the frame very much.
What will make the display raise significantly from the frame would be battery expanding.
The battery is on the left side of the phone (when looking at the screen) and will push the display out when it begins to expand.
Please seek battery replacement as lithium batteries can be risky when they become puffed up or damaged.
If you’re lucky the screen shall be re-used and you can reapply adhesive for the frame.
Best of luck!
james