I am having trouble installing CIVICRM on my Joomla powered domain.  
Here is my environment:
System Information

 - PHP Built On:	Linux a2plcpnl0712.prod.iad2.secureserver.net
   2.6.32-954.3.5.lve1.4.80.el6.x86_64 #1 SMP Thu Sep 24 01:42:00 EDT 2020 x86_64
 - Database Type:	mysql Database Version:	5.6.49-cll-lve
 - Database Collation:	latin1_swedish_ci Database Connection
 - Collation:	utf8mb4_general_ci
 - PHP Version:	7.4.11
 - Web Server:	Apache
 - WebServer to PHP Interface:	litespeed
 - Joomla! Version:	Joomla! 3.9.23 Stable [ Amani ] 24-November-2020 15:00 GMT 
 - Joomla! Platform Version: Joomla Platform 13.1.0 Stable [ Curiosity ] 24-Apr-2013
   00:00 GMT
 - User Agent:	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36



I tied installing the civicrm-5.32.2-joomla-alt.zip and the civicrm-5.32.2-joomla.zip builds, but after a while I receive the following:

"Service Unavailable
The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.

Additionally, a 503 Service Unavailable error was encountered while trying to use an ErrorDocument to handle the request."

In file manager, the folders ~/administrators/components/com_civicrm/ and ~/components/com_civicrm and their subfolders are present. the folder ~/media/civicrm is not present.  The database does not show any Civicrm tables.

Any ideas on what I may be doing wrong?  Thank you in advance.