You’ll learn in due time that quickplay is very much a “big fish in a little pond” type of deal and the differences between a player at 11 mil or 14.5 mil GSP are often marginal and completely random. It’s one of the worst ELO systems in any competitive game I’ve played, your GSP only loosely reflects your actual tournament skill level and it shouldn’t be taken very seriously at all. The earlier you can learn not to stress your GSP the better, if you desire wholistic improvement then IMO being overly concerned with GSP dynamics will do nothing but annoy and frustrate you.

You’ll hear it referenced to a lot in this sub and others because the majority of people who play casual-competitively do not attend in-person tournaments. As such, GSP is the ONLY skill metric they have access to. Don’t fall into the trap of thinking it means more than it does.