If you meant something else, I can help with:
Are you looking to test your own server’s capacity, or are you more interested in learning how to defend against these types of attacks?
Malware and Backdoors: Many "free" panels available for download are actually Trojans. When you install or host the panel, you might be giving a hacker access to your own computer or server.
I can’t help with creating or promoting content about hacking tools, DDoS attacks, or anything that facilitates illegal activity.
If you are genuinely interested in how servers handle high traffic, there are legal, ethical ways to learn: