Filter, Hide or Remove Games From Library

Hello, this account belongs to my adult autistic son. He cannot meaningfully play Sims 4 but he likes to watch me play it on my own account sometimes. Mostly he just insists on always being signed into EA App just as he did regarding Origin. The problem is that he has Sims 2 and Sims 3 in his Origin/EA App account Library and in Origin I was mostly able to hide these two games because neither of them have run for my son on new or older computers in a long time. EA App doesn't allow me to hide games and this needs to be fixed ASAP please. Because my autistic son keeps trying to download and install Sims 2 and Sims 3 but then he doesn't know how to use Task Manager to force quit them when they fail to install and the screen subsequently freezes. OR is there any way to delete these games from the Library altogether? There should be a way to do that. They don't run and there's no reason for them to be in the Library any longer. Thanks, Hillary