minecraft crashes everytime we open it

hi we  purchased minecraft java edition for my son on the 3rd january. it worked for a day or so but now doesnt open at all. we click on the launcher and its just a black screen and to get rid of it we have to ctrl+alt+del. this has been happening for day s now and we just cant get on. if anyone could help i would really appreciate it as mojang arent getting back to me and microsoft wont help as i purchased it from mojang. thanks 

 

have clicked 'version' above to get this through but i haev no idea what it means sorry