This is because you are using things that aren’t supported.
There’s not going to be a lot of help for Windows 7 and older versions of Brave. They have all been sunsetted and are now unsupported. As you can imagine, unsupported means no tech support to help you figure out issues and there certainly won’t be any patches or updates to fix things.
The most you can do is basic troubleshooting, such as attempting to create new profiles, getting rid of extensions, disabling Shields, etc.