My jmeter Script is executing successfully even after the server is down. It is not throwing any errors and giving the response code as 200

i am doing a load test on one of our website.

My jmeter Script is executing successfully even after the server is down. It is not throwing any errors and also giving the response code as 200.

I have tried all other solutions like Response assertions but that is not helping me.

Can you guys help me with this? I am not sure of what i am missing here.