First of all, I think we can make a partition in the living room. If the living room space is too narrow, we can divide it into two parts. We can decorate the living room with some carved glass or hollow partitions and divide it into two parts. Part of it can be used as a reading space in a teahouse or similar study, and the other part can be placed on the opposite sofa coffee table and TV.
Secondly, if you are a wine lover, you can actually make full use of the living room space, decorate it into a small wine cabinet and put it on the bar. You can put some red wine, white wine and some drinks in the wine cabinet. When there are no guests, you can taste a bottle of wine at the bar and entertain guests when there are guests. Putting the sofa, TV and other items on the other side of the bar is both convenient and fashionable.
Thirdly, if you are a fitness enthusiast, or I think you can make full use of the living room space and decorate it into a small fitness room with some fitness equipment to meet the needs of home fitness.
Fourthly, if you are a photographer, you can make full use of the living room space, set the place with your back against the window as a small dark room, build a wall, leaving only one door, no windows and no light to enter, which can be used as a place to develop photos.
Fifth, if you don't intend to divide the space into two at all, but feel that the long and narrow feeling is too depressing, then I suggest you buy some exquisite bead curtains, hang them in the right place, and look at them as two spaces. Decorate some photo frames and murals on the wall appropriately to make the space exquisite and comfortable and reduce the sense of oppression brought by the long and narrow space.
The safest way is to find a reputable professional decoration design company and let their professionals help you design, so that it can be more detailed and specific.