A few questions from a beginner

As a beginner level player, I was wondering how many games do people feel comfortable going at any one time? has the number increased or decreased as you have improved in skill at chess? if it's increased, why? if it's decreased, why? and finally, as your skill in playing has increased, do people find it easier to keep track of more games? (for those that play more games)

I'm mainly interested from a psychological point of view and understanding how the brain learns and processes information (psych student :P)

thanks in advance for any answers I get to this

in my case the number of games a one single time depend on how much free time I have and how much of it I want to dedicate at chess.

Also if I am playing strong player i tent reduce the number of games.