When you see the code that needs improvements you, as a good programmer, fix it because you don't want the bad quality to stay in your project. However, this good intent only harms the project. When you work in a team, you are not allowed to do what is not approved by the project. Every time you see an opportunity for refactoring, make a ticket and let the project decide when and who will do it.

The video is here: https://youtu.be/PkmVF64mZNo