system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] What was stopping Thor from tearing his way out of that "freaky circle" jail cell on Sakaar?
gpt
Well, for starters it was built to contain superhumanly strong creatures such as Korg - fighters powerful enough to survive against the Hulk long enough for the fight to be considered entertaining.

But more importantly, Thor was at an absolute low point, psychologically speaking. His father had died, his hammer was broken, his brother had betrayed him yet again (okay, that one really shouldn't be having so much of an effect these days), and on top of everything else his beautiful hair had been lost to him. Is it any wonder that he could not muster the energy to even attempt to shatter the walls?