Good code reviews are the bar that all of us should strive for. They cover common and easy to follow best practices that any team can get started with, while ensuring high-quality and helpful reviews for the long term.
code review says about clean code (readability, easy to understand,care about names,...) and performant code (Levels of optimization, Design level, When to optimize, Trade-offs, Strength reduction, Run time, Assembly level, Compile level, Build level, Source code level,...)
— How to Make Good Code Reviews Better, Gergely Orosz
When I asked about performance of some code or ask about best practice of some code the community said to me Code Review is not about asking for how to implementation best practices.
As you can see above, the community said to me that generic best practices are outside the scope of this site! Why then is the name of this site Code Review? When one items of a code review is about best practice of code.