Vacmaster - UB0402 Ultra-Lightweight Bagged Upright Vacuum

The Bissell 3313 is pretty light at 12 lbs. I agree with u/Flat_Direction1452 there aren't many vacuums that are lighter and good at cleaning carpets. You could try an Oreck XL. They're lighter. New ones are around $150-170 but you can find many used Orecks for $50 or less. They don't have any hose or tools. There's the Vacmaster UB0402 $111. It's a copy-cat of an Oreck XL but actually has a few improvements like led headlights, hepa bags standard, and a 2 speed switch. I don't recommend a cordless stick vacuum. They don't deep clean carpets and since you hold the bin, battery, and motor at the top the handle weight is actually heavier than an upright vacuum.