People are mentioning alternatives, but do any of them have the repairability of a Roomba? The maker was famous for keeping parts readily available for even the oldest models, and making it so replacing parts was easy (although I've heard that in mid-2024 they started on some model making wheels, chassis, and motors an integrated unit that the user cannot easily service). If you were happy with your Roomba you could…
But I've bought parts from China, because my local dealer sells the parts at very high prices, if he ever has them in stock.