I don't know why would you create the duplicate threads. Here is another similar thread from you about fail2ban: https://community.wordops.net/d/428-is-fail2ban-working-by-default-after-installation-please
Fail2ban works out of the box and doesn't require any further configuration.
You can either check the fail2ban.log file manually or run a command like
sudo zgrep 'Ban' /var/log/fail2ban.log* to find out the ban entries in the log. OR Maybe you can run a bash script like this one: