I also am extremely concentrated although I play slots where you play games that rely 100% on luck,I am concentrated at keeping track of the number of spins that I don't receive the bonus feature.The more spins pass without it,the more chances it will happen soon for example when you have hit 700-800 spins without it,I increase the bet for the next 700-800 spins and by doing so I have always got it with the desired bet,of course sometimes I have burned completely my money chasing it but most of the times I have got it.That is why maximum concentration is very useful no matter that you are playing a game of luck.
If you play for fun then a full concentration is needed but if you play for profit then you can just use that autobet function and leave the game rolling continuously without needing to pay attention to it but I think that it will also depend on the game you are playing with, like if its a skill based game i.e poker, well you need to concentrate on it if you want to win but if it's only a slot game then it's not necessarily needed since slot games are also based on luck.
On each gambling site I think they have live stats. It records your gameplay automatically so there is no need for you to count how many rolls you already spin in that slot game.