dead keys in wine due to my keyboard layout

I am using Ubuntu 23.10 and have a few games running through wine. These work perfectly other than some keys not being recognized from my keyboard. These are French characters like é, ç, à, …

Only games ran via wine/steam do not respond to me pressing these characters. (Does the Ubuntu version of steam even use wine? I assume so.) In Ubuntu itself I am having zero issues; this is a wine exclusive issue.

When Googling this, I have found several people with similar issues and the issue appears to be your locale. I have tried changing this with some success using the update-locale command. It changed some of the language on my system (which I really don’t want) but if I use the locale command to check, it actually doesn’t actually change anything there so I’m not even sure if I did it correctly.

But like I said, I don’t want to change the language of my Ubuntu as everything on my system is exactly how I want it to be. It’s wine that’s having the issues. I did find the following command to start an application in wine with a different locale which others said worked for them:

LC_ALL=fr_BE.utf8 wine C:/Games/Homecoming/bin/win64/launcher.exe

But this returns the follow error:

03b0:fixme:heap:GetNumaHighestNodeNumber semi-stub: 00007FFFFE1FFA90

Not sure if I’m on the right track with this one. Am I even right in assuming the locale is the issue here? How can I solve this without changing anything about my system. The only thing I had to do is pick the correct keyboard layout in the system settings for Ubuntu to work correctly.