Yes, for you and me, this is useful information. But here is where I think, for less savvy users, even a blanket error would be really helpful, focusing on next steps the user can try.

Thanks for the tip, and yes, I can do that, I can check logs, but the point of my post is to have some information that a less experienced user can access and get a clue on what to try next.

BTW in the case of RE2remake, the solution was to switch the game to the beta branch, redownload it, then launch it again - it worked, but I only know this, because of a post on the Steam board of the game. Here is where a blanket error would come in handy (“try this, this, and this, then switch to beta and try that, etc.”), if there is absolutely no information about the nature of the error.