Is there any simple step to install Bolt CMS v5.x or Symfony 5 on a shared hosting via ssh?

Question

I've tried to install Bolt 5 on A2 hosting (shared) as follow:

1. Connect via ssh to the shared hosting account
2. Move to public_html directory ( cd public_html )
3. Create the project as described via the official documentation: composer create-project bolt/project my_project
4. Follow installation's instruction by setting up the database.
5. Move the project files to the right location: cp -r ./myproject/* ./ and don't forget also the hidden files, including .htaccess
6. Load the webpage.
7. [Error message]: Bolt - Installation error If you can read this, you've (probably) installed Bolt in the wrong folder. It's recommended to install Bolt outside the so-called web root, ...
8. By following all the instruction displayed in the error message, no success.