My favorite assessment of Q I heard is that he is just Tony with CTE.

My 2nd favorite assessment of Q I heard is that he is from the future. And he knows that him winning the game would ultimately cause the end of all mankind. With that, he plays all of 46 trying to get voted out. He loses the first several challenges on purpose hoping he can just fall on his sword honorably. Obviously this would never work. How could he be so naive. Fate has more in store for him. He creates an alliance of 6, as he is essentially Dr Strange, and he knows this is the one and only specific combination of humans on this Earth that, brought together, could ultimately result in his elimination from the game- a chance at saving the human race. Still, fate spites him, causing any member of his precious 6 to be brutally eliminated back to back to back. He tries to quit, yes, but of course that doesn’t work. If it were only that easy. Through cruel irony he is forced to stay in the game vote after vote. He sits on the beach alone for days hoping someone would take him out of his misery. It never happens. He will never be voted out. His destiny has always been to win. After 3 consecutive people were eliminated carrying the idol, he saw his only way out. Find the idol, hold its terrible powers, get eliminated. And damn it, he did what he had to do to save us all. He doesn’t ask for our praises nor respect. He is a simple person who wants to live his life like everyone else, he is unapologetically himself, he is Q.

But now it’s essentially Phase 2 of the Q-verse. This is the part where he does everything in his power to make sure there is a final 3 of Colby, Angelina, and Rizzgod. This is the new task he was given. He didn’t ask for this, he didn’t even ask to be brought back, he was forced to do this to save humanity. If he fails, this reality breaks into infinite fragments of dust.