Drupal 8.x

Our website has login content and free content with user login forms.

We have implemented the UserLoginForm::class to display on the originating page but when logging in clicking the login button, the default is to redirect onto the user preferences page and I need it to redirect back to the page of origin.

Our code snippet

Hey everyone - any downside to this solution?

Have read various threads on Drupal related to this issue (eg: https://www.drupal.org/forum/support/module-development-and-code-questio...).

Overview:

Moved site from one host to another (PHP 7.4.3, Ubuntu).  No changes to code. Website domain remains the same:  eg: abc.xyz.com.  Issue occurs when navigating directly to IP address or to domain. 

SET @sql = NULL;
SELECT
  GROUP_CONCAT(DISTINCT
    CONCAT(
      'ifnull(SUM(case when name = ''',
      name,
      ''' then donations end),null) AS `',
      name, '`'
    )
  ) INTO @sql
FROM
  mytable2;
SET @sql = CONCAT('SELECT date, ', @sql, '
                  FROM mytable2
                   GROUP BY date');

PREPARE stmt1 FROM @sql;
EXECUTE stmt1;
DEALLOCATE PREPARE stmt1;

Currently, i'm planning on running my blog section of the site in a subdomain and all other content exist on the main domain. I would like site visitors to be able to do a search which will yield results from both main and subdomain and displayed this on a search result page on the main domain.

Is there a search module which will allow this for Drupal 9? I don't plan on using ApacheSolr dues to some limitation on my server.

The only module i know of is google custom search module but are there better alternatives? 

Thanks in advance.