The OS is perfect, today I installed Elementary OS to test it, the system is very practical and beautiful, but it would be better with the minimize button.
2 Answers
You can use elementary tweaks or pantheon tweaks (Odin 6.0) to bring minimize buttons back.
You can use Pantheon Tweaks to bring the minimise button back.
This is the link to the repo: https://github.com/pantheon-tweaks/pantheon-tweaks
Installation instructions can be found on the readme