Floor mattress or chatai for babies to be used or not for playing? If yes which one is good?

A. Floor mattress is good you can put a Chattai underneath and then you can put the floor mattress because see when the child is going to be on mattress it is going to be soft so your child will not get hurt while lying and playing on that and that is the best way to bring up a child in this is because that is the child is going to learn to move that time will come when the child will move on the tummy will start to crawl and also this is the best way