Room is way too bright.

I strongly encourage you to consider room/window treatment rather than EQ. Equalizers can cause as many problems as they solve. As others have said, thick curtains as well as hanging attractive rugs on the walls can provide a lot of acoustic damping while avoiding expensive acoustic panels.

It would help to see the room and speaker placement as well as the associated equipment. Without this it’s really hard to make a good recommendation 

Maybe you have wall between windows and can make "shutters" out of panels and flip them over the glass during a session and flip them back to look like deco when not listening seriously. At least at the first reflection spots.

Treat the room as much as the budget and WAF will allow.  Stay away from any synthetic fabrics/rugs.  Natural fibers will do what you're looking for.  If room allows, experiment with some tall natural plants, you would be surprised what this will do, especially at the first point of reflection.

Thanks to all for your suggestions,

I keep hearing about this"first point of reflection."

What exactly is that? I read about running a mirror along the wall and looking for a speaker.