Apachectl Cannot be found?

That's true. Autossl use letsencrypt API v1, hense it's not supported for wildcard.

Also, I'm not sure why you use Apache plugin for certbot.
Since let's encrypt wildcard certificate use DNS-01 validation, and it has nothing to do with Apache.. (cPanel doesn't allow install the certificate from command line)

Can you try just run sudo ./certbor-auto certonly or manual if you don't have DNS API setup. (Automation)

Just a P.S. (maybe a fancy advertisement..), I remember someone in our forum developed a plugin called fleetssl, which support let's encrypt V2. You might want to check that out.. (to save you from entering command line, pass validation, grab certificate etc...)

https://letsencrypt-for-cpanel.com/pricing

This might be able to resolve your "apachectl is not working" error.

Thank you