If you have a half decent car, and you want to sell it some time, get some decent fitted mats from the dealer.
Preferably rubber ones, that fit fully and don’t move around.
They aren’t expensive compared to what they save you when you sell the car.
The only part of a car that’s pretty much impossible to make look like new when valeting for sale is the floor carpets when non fitted mats have been used.
With fitted rubber mats from the dealer the carpet underneath looks like new without me even needing to clean it.