wp-admin/install.php not found

Hello!

Please, help me! I am a total beginner and feel a bit lost. I have a domain and hosting on totalchoicehosting.com and I am now trying to install WordPress in my root directory and already have successfully uploaded everything through FileZilla to the server as explained here : https://support.totalchoicehosting.com/index.php?/Knowledgebase/Article/View/32/0/Installing-WordPress

I am also sure that I redacted the file wp-config.php correctly.

Now I am trying to go to https://anastasiasofina.com/wp-admin/install.php using my browser, but it says:

Not Found

The requested URL /wp-admin/install.php was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

I have also tried to go to https://www.anastasiasofina.com/wp-admin/install.php and to https://anastasiasofina.com/public_html/altovka/wp-admin/install.php just in case, but the results were the same.