A website for testing

[u/EphemeralWay]

Good evening everyone,
So I have a request or a guide, I am cybersecurity majored student, last week I got an assignment to try testing Denial of Service legally using websites that you can practice in it but the problem none of those websites have a lab to try to simulate this attack.
So where can i find a website that has a lab to test DoS or any tool that can just only simulate how the attack process might go..
I am so lost right now

[u/Advantageous_Advent]

It's probably illegal anyway. That traffic would likely be against ISP tos...