Running a subdomain on drupal in a subfolder?

Question

Drupal

Hello!
It was necessary to create a large number of subdomains for the site, the hoster - runs - does not support autosubdomains and regards each added subdomain as a separate site. I will not meet the limits of the number of sites. The database and content should be different for everyone.
I decided to try to generate subdomains through htaccess - create a directory /subdomains/ , put folders with my subdomains in it, copy the site distributions into them; do the same with bases.
htaccess code

RewriteCond %{HTTP_HOST} !^www\.net-narco\.ru$
RewriteCond %{HTTP_HOST} ^(.+)\.net-narco\.ru$
RewriteCond %{REQUEST_URI} !/%1/
RewriteRule ^(.*)$ /subdomains/%1/$1 [L,QSA]

Works, opens. But there is one problem : the subdomain site generates links to its pages / css / js, taking into account nesting relative to the parent.
For example :
Parent: site.ru
Hosting subdomain path: site.ru/subdomains/volhov/
Final main subdomain: volhov.site.ru
Subdomain site nested pages: volhov.site.ru/subdomains/volhov/%some-article%
Sites run on drupal 7, I tried to use multisite modules before - I don't remember, but something went wrong. It was impossible to share some elements between the sites.
Question: is it possible to force Drupal copied into subfolders to use the base url NOT relative to the site root? So that subdomains have links to materials not volhov.site.ru/subdomains/volhov/%some-article%, but volhov.site.ru/%some-article%?

Answer 1

Have you added $base_url to setting.php for new sites?
And there is a lot of useful stuff here: https://www.drupal.org/docs/7/multisite
For example,

• https://www.drupal.org/docs/7/multisite-drupal/mul...
  
• https://www.drupal.org/docs/7/multisite-drupal/mul...
  

Answer 2

If you need SEO, it will be easier to create a bunch of subdomains (while not creating a new site), send them to the main site, write a module that will tamper with this or that information by the domain name, for example, contact information, and, in principle, everything