aquatone VS Metasploit

How about aquatone? https://github.com/michenriksen/aquatone

Empowered with a list of all the exposed URLs in your organization, you can then set up a process to scan these using a number of web-focused Dynamic Application Security Testing (DAST) tools and scanners such as Zed Attack Proxy, dirsearch (Web path scanner), Aquatone, and Nikto2. The OWASP® Foundation maintains a full list of scanning tools that could be used.

AQUATONE - Subdomain discovery tool utilizing various open sources producing a report that can be used as input to other tools.

Metasploit

Metasploit: https://github.com/rapid7/metasploit-framework

1-) Learn Hacking on a debian based distro like Kali Linux - I personally started with tools like nikto, camhacker... and then moved to more complex frameworks like metasploit.

I once had to give a presentation about Metasploit, and whether it was ethically correct for the creator to make it free and open-source, available to everyone. And in researching this I realized that there were a lot of parallels between the arguments for or against hacking tools being readily available and the arguments for or against gun control. I'll just list a few quickly:

Metasploit Framework (mentioned earlier)

This phase is where the pen testers practically prove that there exist potential vulnerabilities in the target system. The pen testers do the hacking using an array of technical approaches and social engineering methods to exploit the vulnerabilities. The ethical hackers commonly use Metasploit framework to automatically execute exploitation against the target systems. Moreover, they may install malwares such as rootkit to persistently maintain their foothold and further compromise the target system.