What you’ve described sounds like pretty much a perfect fit for WordPress. And while you say that you’re having a problem you don’t say any actual details about that problem so it’s going to be almost impossible to give advice on that.
How are you trying to organise the menus now?
How do you want them to be?
What are they like now?
And a link to the site so we can see what’s going on would also help a lot.
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