Pictures from all sides and dimensions are helpful. Plus, how many people are going to be using the seating. For what purpose? Is a tv part of the plan? Is the entrance door the main one for your home or mostly used by guests.

You can have the couch back to the door if you want to creat a sort of entrance hall, but the room will feel bigger if you put the TV on the door wall and put the couch across from it --that allows a choice of a corner chair by the door or a small entry table. In either case, an arm chair or two on the "open side' (backs to the rest of the space), possibly with a table between. Rug to anchor it all.

Could we see a full floor plan? I'm just curious if swapping the living for the dining room might be an option.

I would not box myself in with a sectional.

Post the dimensions of the whole room, doors, windows, etc. Take a picture of that and add it to this thread.

I totally feel your pain, a room with lots of doorways is a puzzle. Here’s how I’d approach it: Treat the doors as permanent “gaps” you can’t block, and plan your furniture to float within clear “traffic zones” (aim for ~90 cm or more of clearance). Position your TV or focal element on a wall with fewer openings.

Then place the sofa opposite (or perpendicular) such that circulation flows naturally around it. Use side chairs instead of a full sectional so you can keep sight lines to other openings. A slim console table behind a sofa (instead of a bulky low back) can help define space without blocking flow. Anchor everything with a rug that shows the “seating zone” visually.

Show the rest of the room for proper advice.

No more info Cindy?

Then I'd go with a tv on the wall with the cable outlet already in place. NO console because it's a walkway. A sofa with chaise and large ottoman(s) in front of the window and across the wall opposite the 85" tv. Maybe a glide/swivel armchair. The ottoman acts as a table as needed.

It looks like you have the right idea with the box layout on the floor. However, you might want to make sure you don't get anything too big for the space. You might try a sofa to the right of the door facing the open door frame. Place the TV to the left of the door frame and then get one to two accent chairs for in front of the window. Below are a few ideas from various designs of ours that might also help you with inspiration.

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