Which CMS to choose for the portal?

Question

CMS

Greetings!
I would like to practice creating my own Internet projects, learn a lot of new things, "get my hands on it".
I plan to create a portal with a small functionality such as a forum + admin panel, where it will be possible to publish news, etc. There are plans to expand.
Which CMS to choose, from which one could "jump" during development? That is, roughly speaking, to have an admin panel, a registration form + some kind of page creation mechanism (that is, just a minimum)? Are there any?
I'm considering writing PHP from scratch (also for practice)
What do you think is better?
I am familiar with Joomla, WP, Bitrix. I think in the direction of self-written or Drupal. Help a newbie in the back-end!)

Answer 1

No CMS will provide you with the functionality that you want to see in your portal. Absolutely all CMS are created for common tasks, and with common functionality (in order to please users so that they use this particular CMS). Ready-made CMS are good if you don't have to worry about all aspects of development, and you just need to do something quickly and easily.
Specifically, in your case, you need to either make a CMS for the project, or build an application based on frameworks. Or as an alternative, make a CMS for a project based on a framework.
If you want to use native PHP, with all its features, then use Zend Framework 2+. And if you don't want to spend time building a bicycle and using ready-made solutions, then use Symfony 2+.

Answer 2

You won't believe it, but everything is there
I already wrote about this What CMS to use for a car sales website?

Answer 3

It's better to learn the framework. And then using the framework to make your own cms
I recommend yii or yii2