Small spaces are better with small furniture. [Sectionals[(https://www.houzz.com/magazine/what-to-know-before-you-buy-a-sectional-stsetivw-vs~24686755) are not easily rearranged. You can move the entire sectional 90º, but you can't flip them because the arm will be facing the wrong way. Check out the link above for a Houzz article on the subject. A sofa with chaise is better because it is smaller but faces the same problem with how it is arranged. Consider a couch with built in recliners instead.

Nonetheless, below are two layouts using a sofa with chaise. The main change is where the TV is placed, and the change required an opposite version of the sofa-chaise. You need at least 3 ft left open for a walkway between the openings to the dining and the hall.

Unless you need to seat a lot of people and are willing to crowd a half dozen people onto a seat with leg room for two or three, smaller individual seating and/or a pair of 2-seat sofas that can be fairly easily moved to be rearranged for seating and/or for cleaning would be more practical.

If you only have a crowd a few times a year, you might invest in some folding directors' chairs rather than overcrowding your room.

In lieu of a coffee table, choosing a storage ottoman that could be used for extra seating with a top that flips so it can be used as a table can help.

Narrower end tables and tall thin lamps can help both with taking up less actual space and visually making the room less crowded.

The right bookcase/media center could do double duty as a tv stand. I found a used oak hutch with glass doors that works well for a tv stand.

Good luck in your search.

Although I like your idea of a chaise, it might overwhelm the room. I agree with small-scaled furniture for this room. Look for apartment size, when you google.

One streamlined sofa and two chairs.