Converting to Drupal

I sure need help to be able to use xenforo and drupal 9 on the same domain.  Drupal is in the root and I've moved xenforo in a subdirectory called /community .
I have both working but the rewrite rules to /community (xenforo) keep going 404 after a few hours. If I remove and re-save my rewrite rules they will work for a few hours again.  I don't understand how to fix this.  Can someone please help?

I am still on a localhost devel installation.

I have read at least 30 posts at various places. Many don't work at all. Many are outdated. Many make no sense whatsoever. I have migrate, migrate_plus and migrate_tools installed. I added a migration group but all that enables me to do is to list migrations that do not exist #Frustration.

 I found a couple of commercial solutions but I prefer to do this myself and save some money.

I wanted to make manifestation on drupal just like this site [spam link redacted]. This site is built on wordpress. I wanted to know how i can make similar website with faster mobile and web speed and add few more features without making my site slower.

AS i wanted my site to be more secure and multi lingual.

Can anyone share any guide for building my first website on drupal?

can we create tools website on drupal?

Hi,

I have an old Drupal installation not installed over composer crea.... and a new installation with composer-installation. 

I changed the site uuid via 

drush config-set "system.site" uuid "fjfj34-e3bb-2ab8-4d21-9100-b5etgetgd99d5"

The UUID in the example is not the right one. I changed it.

I have the right path to the configuration sync folder. But I have some problems. I always get the error:

Hi

I find a description for D5 D6 and D7 under Convert any website layout or template into a Drupal theme - easily! | Theming HowTos | Drupal 7 guide on Drupal.org

Is the process for a D9 page the same ore similar? Is there a description of the same process for D9?

A few years ago, I developped an custom module in drupal 7 to show a schedule of the meals (like a calendar).
It contained an overview of the month (by category: 3 different pages: normal / vegetarian / soup)  + a block with the options of the day on the frontpage.

Now I rebuilded the site in drupal 9, and I need that feature again. I think/hope I can solve it with views and contenttypes. But I don't see whats the best solution to do it quick and easy.