I have the robot vacuum still doing its thing every other day but at least once a week I do a deep clean and it removes a ton of dust.
I also have a HEPA filter air purifier going 24 hours.
Carpets are the worst.
It has been great so far. The bags are a little expensive, but worth it. It is quiet and pleasant to use and has strong suction, and parts are available if we need them.
I am wary of taking 7 year old advice in general, given how quickly things change and how companies put out new products each year, but I hope you like your vacuum. I paid $215 USD for my vacuum new with a 5 year warranty - there's very little a tech could do on this vacuum that wouldn't cost more than a new vacuum.
The high cost was hard to get over, but I waited for a sale and now I only wish I had done it sooner.