I'm sorry that you're not liking the new Lightroom CC. To uninstall it, open your Creative cloud desktop app and click the arrow next to the OPEN button where it says Lightroom CC then choose "uninstall."
Keep in mind that Lightroom CC is not an upgrade or replacement for Lightroom Classic. It is its own separate program. You can use it as little or as much as you like. You could just try it with a small test collection to see how it works.
Please feel free to let us know specific things you were unhappy with. We love input from our customers and use it to make the product better.