Dismissed casses

A short disclaimer: I am not in law enforcement. I watch police chases online. I watch LackLuster, Audit the Audit, Code Blue, and Donut Operator. I have massive respect for law enforcement, it is a job that I don’t want to do also a job that I don’t know I could do. I understand that most officer Ed are really good people, there’s bad apples out there just like any industry. Officers are also humans too who make mistakes. My question goes to the good apples. When you do make an arrest and it gets overturned or dismissed is there a feeling of guilt? Really what is that mental process like? Is it a ‘I’ll do better next time’ type of mentality or ‘next time I’ll make sure it sticks’?

This is all question coming from my curiosity. I’m on a 7hr flight right now and am in a deep rabbit while lol.