In my experience, they will be happy to start anywhere, like just how is your day today for example. You can just talk and they will listen and ask about stuff that they think might be relevant. Whatever is “wrong” it will probably come up in some way if you just talk about your day with an experienced therapist. You don’t need a clear statement to come with, they know that they’ll have to talk and that it might even take several sessions to start formulating something.

I can imagine even starting by saying “I don’t really know what is wrong and what to say, so I’m afraid I’ll just be awkward and you’ll think I’m an idiot” and they’ll be like “Haha, that’s interesting, do you often feel like other people might think you’re an idiot?” and you’re up and running!