Avoid lining furniture up around the walls. Try to lay out your furniture arrangement in a “U” shape. This will create a conversation friendly atmosphere as everyone can face each other when seated. It is a good idea to use an area rug to anchor the conversation area. You can also try angling your furniture. This can make your room feel more spacious.
Scale is also very important. Scale refers to the size of one piece of furniture to another. If you were to place a tiny coffee table next to a huge couch this would look unbalanced.
A sofa should ideally be placed on the longest wall in the room.
I hope these tips help you as it can be very overwhelming trying to plan the best furniture arrangement for a room.

