Dear Ladies: How to check if you’re in one of those dudes’ chats?

For the ladies: I have some suspect that my ex might have been part of those disgusting chats of disgusting dudes sharing images and video of their partners- I am not together with him nor I have the numbers rod his second “work” phone and it’s pointless to ask him anything as he is a compulsive liar. Is there a legal way to verify if these losers have recorded you?

Thanks