I'll be blunt here: an interviewer is not a therapist. Sharing even just a fraction of what you have written here will be counterproductive: Keep it simple and short.

Most interviewers will ask the question to determine whether the job at hand is a better fit than the previous. "I prefer not working in a prison" will do this just fine, unless you are applying to another prisons. If there are more questions, just answer them as asked. Again, short data-drive answers are more helpful than long emotional statements.

Instead you should focus on what you actually have learned and accomplished

1. Working with difficult people and managing low motivation
2. Getting the job done (i.e. food on the table) in extremely challenging conditions.
3. Ability to handle high turn over in both staff and management.

I understand that this has been challenging for you but not you managed to see it through which takes a lot of perseverance and strength. Be proud of this and use this to your advantage going forward.

I'll be blunt here: an interviewer is not a therapist. Sharing even just a fraction of what you have written here will be counterproductive: Keep it simple and short.

Most interviewers will ask the question to determine whether the job at hand is a better fit than the previous. "I prefer not working in a prison" will do this just fine, unless you are applying to another prisons. If there are more questions, just answer them as asked. Again, short data-drive answers are more helpful than long emotional statements.

Instead you should focus on what you actually have learned and accomplished

1. Working with difficult people and managing low motivation
2. Getting the job done (i.e. food on the table) in extremely challenging conditions.
3. Ability to handle high turn over in both staff and management.

I understand that this has been challenging for you but you managed to see it through which takes a lot of perseverance and strength. Be proud of this and use this to your advantage going forward.