Is that a sliding glass door you need to keep clear or just a window?

Put couch in front of window/corner. Put chair angled where couch is now.

Put tv on right of fp.

Have you tried the loveseat against the wall and the sofa against the windows? IF so, what about it don't you like?

Your seating is large. I'm afraid you may have to sacrifice the armchair or loveseat. There doesn't appear to be enough space for both.

Does this space also include your dining room set?

Could you use a narrower end table or a floor lamp -- or lamp table combo -- in the corner so you could move your sofa a few inches farther away from the doorway to enable you to add a bookcase behind the sofa. If anyone in your home as any DIY inclinations, you could shelving board to make one as long as the back of that part of the sofa (or as long as the back of the sofa plus the width of another end table). There are probably plenty of You Tube videos to help with that.

You could have the bookcase lower than the back of the sofa -- less likely to be easily bumped over w/o needing to affix it to the floor or add weight to the bottom.

https://www.pinterest.co.uk/pin/322429654563789425/

https://www.pinterest.co.uk/pin/19069998407097338/

https://www.pinterest.co.uk/pin/377317275016068499/

https://www.pinterest.co.uk/pin/797559415234725134/

https://www.pinterest.co.uk/pin/538743174152961007/

How deep you make the shelves would depend on how much room you have.

Alternately, the bookcase could be the same height as the back of your sofa.

https://www.pinterest.co.uk/pin/180777372517955596/

https://www.pinterest.co.uk/pin/381187555944699772/

https://www.pinterest.co.uk/pin/479914904026119459/

You could leave the back of the bookcase open or enclose it -- plywood backing would be better if you don't want to see the back of the sofa.

You could leave the front of the bookcase open or add solid doors or glass doors (think upscale overhead kitchen cabinets) or some combination of solid doors and/or glass doors and/or open shelves.

Measure before shopping and perhaps you could find a cabinet instead of a bookcase.

https://www.costco.com/Charlotte-Stackable-BookCase-with-Glass-Door-one-pack.product.100363485.html

A budget friendly idea: perhaps you could find a hutch from a used furniture/stuff store -- perhaps Habitat for Humanity Restore Store -- that would fit your space.

It is a sliding glass door...I do think the seating is large...