Architecture and Interior Real-Time Assistance

Hi, I’ve just begun working with Unreal. I’m interested in creating realistic Interior design, but I’m not sure where to start. I was interested in using 3ds Max, but the program is very expensive in my country and the Pandemic didn’t help either. Does anyone know a cheaper 3d software that works with Unreal that gives off the best results?

Blender is free and it seems to get better all the time.