Hi Susan, we have two perfect, simple, solutions for you. They both slip right onto the end of your hose's metal tube end. The first is the Stretch Hose. It is less money, less durable, and recoils so is a bit of a workout to use - BUT it is so easy to store and so easy to use for quick clean-ups. Next is any Basic Hose. It will fit right on and work for you like your existing hose. Of course, as you noticed, you will not be able to control the suction at the end of the extension. You can buy any length Basic Hose here:
https://builtinvacuum.com/hoses/basichoses.html.