Architectural kits door, roofs, windows etc.

I am looking for a free pack of contemporary architectural elements. walls, doors, windows, ceilings, roofs, etc Also interior things, like sofas TV etc. And eventually landscape element.
Because I am self-training it needs to be free. I am hoping Epic has a good library of these things, I am just not sure where to find it.

Any advice would be much appreciated.

Watch the Unreal Marketplace, they have free stuff every month. Then there is Quixel Megascans which are free for use with Unreal Engine.