Hi @cherub-chum,
Regarding the comments above:
When running the install command, and for the moment, it does a very simple check to try to understand if the system was already configured. It checks for the .env.local file. (we are going to improve this soon).
So your are getting the above message probably because of a previous attempt to run the install. Just remove the .env.local / .env.local.php and try again. Also, please make sure you have a clean db, before running the install, as the install adds the needed tables.
Please run them on the Suite 8 root folder (not on public/legacy) , to make sure everything gets the right permissions.
Please let me know if you still have issues after trying the above.