Lighting problem/Bad render

i’m new in Unreal Engine 4 (i work with since 1 year but i don’t have any lessons…) and i’m try to make a scene for my game but the resulrt is… too bad for me. But i don’t know what can i do to change this. (i try to set lightmap to 1024, set light to static…) and i have a question, how can i make to have great result, with blender for start (what i need to do in when i create my objects…) and in unreal engine ?

Thanks for help :slight_smile: