Do you turn off your PS5 or put it in Rest Mode when you're done? According to Sony, the decision is a 50/50 split for all players
"As it turned out, it was actually about 50/50 between the two options for all our players. So, what that meant was for about 50% of our users, when they booted up, if they were in the US, they were landing on our Explore page. Those outside the US would land on the page for the last game that they have played."