MAya,unreal,blender collisions trouble etc

I’ve being using various programs as blender and maya and none of them seem to give me a study work process. My huge issue is simply this “collisions” I just made a house and about thirty boxes to mesh every area to make a collisions and it didn’t work, actually just wasted 2 hours. Everything else seems easy but this collision issue is a real pain anybody have any ideas to simplify this? AM i able to make a character room boxes and etc in unreal engine 4 alone? do i need blender and etc?