Just a random question. How often do you guys tip the delivery persons?

How ofren do you guys tip the delivery guys thay deliver the food to you? I didn't order food here in chennai at night ever. I always go out and eat by myself but today i ordered and felt like this is such a tough job, idk i lowkey felt bad. So just wanted to know your perspective over tipping someone. Maybe the question is bit weird but mhmm.