Seems you’ve got some treatment, well placed too. Previous comments explaining further options there made need to be considered, however? Yep, when you get a chance…experiment with that first reflection point - dedicated panels placed on sidewalls relative to your listening position using a mirror to determine placement, etc. You may already know this. But it does sound like first reflection issues. @yogiboy with other considerations (that are great and I should also try!).
But if changing speakers - and don’t want to break the bank - I’d consider also Revival Audio. Their whole range seems phenomenal and definitely compete with more expensive equipment. I’ve the Atalante 3’s and they sound great with whatever I do front end wise. But - of course - the other recommendations are all super excellent!