I think I've done about the best I can regarding positioning of my speakers with the limitations of my living room shape taken into consideration.
On the plus side, we have carpeted concrete floors, stone walls with interior insulation, which has certainly helped to give acoustic damping, large heavy curtains a large really thick rug on the floor and my speakers are at least 1 meter from the back wall.
They do have to sit either side of a hearth and in a large inglenook but they're forward enough that they're not inside it.
One speaker is a little nearer to a wall than I would like.
That is one reason why I feel I'm better off with smaller speakers rather than large ones.