I moved your posts into their own thread. We like each separate problem to have its own. Your comments had little to do with the other person's issue.
What issue exactly? That you somehow damage your server conf?
You should have test systems to avoid that. And, even health checks to ensure it is properly running. These can take many forms and is well beyond the scope of this forum. Many things can theoretically go wrong with servers. Not just certs.
You will have to review whatever future system you choose to use and how it is configured. But, yes, Apache has a conf file on linux systems too.