Get in contact with people in this scene. And who knows... maybe someone will invite some random to a private cheat (no, not really). That's one option. Being a lucky guy. Or you actually learn to program and develop your own thing within the next 4-7 years. A private cheat is nothing else than using your ideas and fulfill those with your own code. Then all you need to do is keeping it private. And that's why you won't find private cheats with this way. The private in those has a meaning. If someone in here offers you such a "private cheat" it is probably just pasted off some ImGUI internal cheat, which base got detected back when it was leaked.
I was lucky to work with the right people together to get access to a few of these.