Roomba or similar?

Ive got a cheapy one that just vacuums, and I'd recommend it.

Its enough that you could probably get by for a week without having to drag out the big vacuum and do anything.
And my flat is very messy, in terms of dust, and "bits", ordinarily.

I have a Roomba that mops, cost about £150 in a sale. Vacuuming is excellent, mopping is ok, but I don’t feel it mops that well.

My friend bought one from temu.
She can see what its doing on her phone!
It mops too, and cost £90.

I have got a Eufy that my son and daughter in law gave me when I was having some mobility problems. It doesn't have a mopping function but I'm really happy with it as it is. I don't use the mapping system, just set it to go and sometimes use the remote control to concentrate on certain areas.
They have come down a lot in price now and you can also get them on Ebay etc.