Have you ever face this issue? WordPress already installed but asking to install. You check everything. You have installed WordPress f or probably transferred database from a backup to phpMyAdmin, but when you run website, the installation page comes!
The most probable reason is the difference between table prefix in database and wp-config.php
Just open your phpMyAdmin in hosting panel and take a look. You may find something like this. (The default prefix is wp_)
Now open your wp-config.php and check this line:
Change it , if it is not as same as database and save the file. That’s it !