Clean code and the practices are about eliminating or at least attempting to reduce complexity. Although clean code solutions may seem elegant and efficient, they are not always easy and are often the direct result of combating complexity!
Clean Code: The Manager's Guide to Building Quality Software
How to write clean Java code: Best practices
How To Write Clean Code In Kotlin?, by Mukul Jangir
Writing Clean Code: Best Practices and Principles - DEV Community
We All Have Misunderstandings About Clean Code, by Ali
Clean Code Principles: Be a Better Programmer - Simple Programmer
Clean Code — Ankush Choubey
Clean Coders: Level up your code.
The Art of Clean Code