How to prevent the menu from appearing on the home page

Hello Rikard,
Thank you for answering me.
But I don’t understand your explanation.
I’ll explain what I don’t understand. If I seem picky to you, you should know that it’s intended. I don’t speak English and I have to work with web translators. These translators are not always faithful and I am obliged to make short and concise sentences.
Can you show me the way to the setting because I can’t find it?
Example :
WordPress dashboard > Enfold Child > General layout > Formatting > etc…

That’s what I don’t understand:
1 – You: “You should be able to define the header behavior in the Layout menu”
Question: Where is this menu located?
2 – You: “from the edit screen for each page individually”
Question: What do you call the edit screen? Where is he now?
3 – You: “Have you checked the settings of the pages that don’t work?”
My pages work, what’s wrong is this:
When my home page appears, the top menu appears on my site xxxxxxxx.lu (The exact name is in the private part of this message). I would like it to be like on my sites xxxxxx.fr and xxxxxx.be, it doesn’t appear (it only appears when you scroll down). If it appears when you scroll down it doesn’t matter, but I don’t want the menu to appear when the home page is displayed. This causes visual problems.
On my sites xxxxxx.fr and xxxxxx.be everything is fine (the menu does not appear immediately, it only appears when you scroll down. I can’t find out why this doesn’t work on my other sites, but my settings look the same.
Thank you very much for helping me.
With kind regards.
Kidbert6.