We've gotten a bit off-topic here, but in general, having GUI access to the entire operating system where you can edit any file as root, isn't a good idea. Although you mentioned a desktop situation like Windows, there are still many hidden files and many areas where you'll get the "I am an administrator" confirmation pop-up if you try to adjust them. It's just bad practice and likely not something we're going to add.
I mean this in a completely 100% non-condescending, non-judgemental way, so I just wanted to clear that up since this is over text and things can get misinterpreted - it's completely fine to work with a server administrator. There's no shame in recognizing you're out of your depth and it's time to call a pro. It's not different than any other work - I own tools, and I'm completely comfortable completing an oil change on my vehicle. But if I blew a head gasket or a transmission, I take it to a pro. Computer systems are no different, and if you aren't sure how to find the MySQL configuration, it's unlikely you'd have much luck optimizing it in a way that will be beneficial to the health of your system. I think I'm pretty okay at optimizing MySQL, but if I get a corrupted InnoDB table, I either talk to some friends that do that type of work full-time or just restore from a backup.
It's also possible there could be something else entirely on the machine killing a process. It's also possible it might not even be on your server, but issues with a VPS parent that is mismanaged and the parent itself running out of RAM.
I guess what I'm getting at is with server optimization or odd issues, it comes down to so much more than "I just need to see one file" in any situation like this. A lot of it is feel and experience working with similar systems over years. There just isn't going to be an "edit this config and you'll be fixed" type of solution for this particular issue, unfortunately.