Minecraft won't open!

Hi,
Since January 1, I can't open minecraft anymore.
I click on the launcher icon, open the empty folder and do not respond ....
I uninstalled and installed it again and the same problem happens. I tried on another computer and the same thing happened.
I bought the game for my son at Christmas and we only managed to play until December 28th.We have the java edition, we have the most recent java.
How do I solve this !!!!!