I recently dug up a cracked pvc pipe connecting my gutters to the street and am in the process of replacing it. I do not know why they cracked. How should I do this properly, and with what materials?

I was directed to a green 3" PVC sewer pipe, which makes sense, but that is what I dug up. I wouldn't want to replace it with the same material and have that crack as well. Could I use a thicker sch-40 instead? Will that hold up more to cracking, freezing etc? Also, is gravel needed in the trench?

Thanks!