When I try to use ctrl +movement keys it doesnt seem to work.
It only works if you got items in your inventory and they are usable in your current situation. If you want to use specific items explicitly, try pressing the buttons 1-3 to select an item from your inventory. Generally, using ctrl is faster though.
If you think you found a bug, we need more information to fix it. In this case, please join us on Discord, we have a #bugs channel there to discuss problems with the game.