i have a laptop here with a gemini lakeceleron n4000, 4gb ram, and 64gb emmc. it barely meets the requirements imposed by microsoft for win11.
windows 11 on it is as horrible as you might imagine. someone brought me one very similar last week to 'fix'.. basically same model but with upgrade to 16gb ram. was not any better at all. essentially unusable, just like mine. their 'fix' was buying a new ryzen 5 laptop 12 hrs later.
It's okay. Not particularly brilliant but it will run. I'm 80% sure that ram is the big thing that makes it feel responsive. My dad's PC runs windows 11 but is a 2nd gen i5 Sony AIO. 2c4t, an aging 5400 rpm laptop hdd, and 8 gb of ram. It's usable enough for his usecase.
My friend has a quad core Celeron (n4020) laptop with 64 gb of emmc and 4 gb of ram. It's usable. She can play the Sims on it.