Is this a good gaming laptop?

Laptops in general are horrible for gaming. You'll end up spending a lot more money for lower specs when you could get a better gaming desktop for more money. The best thing you could do is build one yourself, but there's also stores and websites where you can customize what parts want and they'll build it for you. If you really do want a laptop for it, or can't get a desktop for whatever reason, I would try to look around a bit more at other laptops with similar or better specs in that price range first at least.

I wouldn't buy a Lenovo period. ASUS ROG, MSI, ibuypower are all far better options.