How do I evade detection while using a VPN during an attack

Question

I’m practicing ethical hacking techniques in a lab environment, and I’ve been experimenting with using a VPN to hide my IP address during simulated attacks. However, I’m curious if there are methods that security teams use to detect VPN traffic during an attack, even when the attacker is using a VPN.

What techniques are available to detect VPN use during attacks, and are there ways to avoid detection while still maintaining anonymity? I’m looking for insights into how attackers may try to evade detection.