Do I focus more on improving myself for next time (growth mindset), or do I focus more on "fixing" (fixed mindset) the failure so I feel better right then?

This is a personal question that only you can answer. However, we can provide some guidance that can help you start your work.

There are two common ways of thinking that determine how people act in various situations. These are the fixed mindset and the growth mindset. A person who operates with a fixed mindset is likely to believe that all his traits and abilities are innate, and that there is nothing that can be done to be able to change them. These people will try to avoid making mistakes and are more likely to be embarrassed and to try to fix a situation the moment anything wrong happens.

On the other hand, a person with a growth mindset understands that it is important to make mistakes and to try new things because the mind is not a fixed element. Instead, people can learn and develop new skills when they try new things.

It is generally more advantageous to operate under a growth mindset. This allows people to develop skills that they did not previously have. It also allows them to make mistakes with less guilt and shame.

he will find out what went wrong or happened and how.