There are lot of installation methods available, which one is best and help to upgrade future versions as well as extension.
Centos 7, Nginx
installing with composer gives you more control on upgrades, extensions installation, versioning and other benefits.
< VirtualHost \*:8085> ServerName 127.0.0.1:8085 DocumentRoot /var/www/html/magento/ < Directory /var/www/html/magento/> AllowOverride All allow from all < /Directory> < /VirtualHost>
if you'll follow instructions on devdocs you won't fail
take your time to understand them before you go on, it will save your time later.
In your case, if you didn't specify an admin uri, then the install scripts generated it.
you can retrieve your admin uri:
look for a line like this.
'backend' => [
'frontName' => 'uriofyouradmin'
2) using the command bin/magento info:adminuri
then you'll be able to login append the uri to the main website url.
have a great day