Wood paneling, framed posters, cement floors.....a lots of reflective surfaces. Focal's are tipped up in the treble to begin with, and the toe in is not helping if they are that close together. Get a wool area rug at least 5/8" thick or better, and lay that down.....modern carpet is reflective, not absorbing. Wayfair has them for reasonable cost......just make sure they do not have a coated backing.
Look into absorbing panels directly behind the speakers, diffusers behind the listening area, and diffusers at the first reflection point.....that might be a good starting point, and not as expensive as you might expect (GIK Acoustics or the like). As someone previously mentioned, you could have your absorbing panels covered in copies of your posters.
You've already found out that separating the speakers and to toe out, so that's good. Great luck to you