Or should I get a reconfigurable lovesac?

Looks like it’s a fairly small room so definitely a couch and loveseat or chair-and-a-half.

Or a small sofa and two club chairs. Sofas do come in different sizes!

Here are two possible layouts with a TV adjacent to the fireplace. I’d start saving inspiration photos so you have a clear sense of what to look for when you start shopping. A large chest used as a coffee table is very useful for stowing toys or throws.

To give appropriate advice please post a floor plan showing dimensions and also location of all windows, door, entry...

Here you go

It is a floor plan but where are the windows? the doors? walls? etc... I can't relate that floor plan to your photos.

I’m sorry but that’s all I have.

Draw it out on paper with all the doors and windows and of course dimensions and post a picture