Sorry that you do not like the new user interface of Lightroom. Are you referring to the interface of Lightroom Classic that you're used to? If so them, it is still available by the name Lightroom Classic in the Creative Cloud desktop app.
Sounds like you are using Lightroom, while you should be using Lightroom Classic. Lightroom is not just a new interface, it is a new application. Lightroom Classic is the latest version of the Lightroom you are used to.