Room is way too bright.

Dense drapes.  Ask your sig o. to choose color. (This is not hard.)

Thanks to all for your many suggestions and comments. 
And yes, I should have done a bit more research before asking about reflection points. My apologies. 

Finding the First Point of Reflection 
 

https://youtu.be/fs_0hnD_JNQ?si=dS8IqX8E2zCYmh00

I have 17 windows in my large listening room. Using Marigo tuning dots made huge positive difference with no downside. Visually my wife initially did not like but got used to the look after a week or so.

https://marigoaudio.com/zw-window-resonance-damping-discs/

You should consider BACCH4MAC.... their room correction software (ORC) is amazing.... I have an office with windows along both sides and it fixed everything as well as made the speakers completely disappear...  most incredible technology I have ever heard 

Theoretica Applied Physics BACCH4Mac Stereo Purifier Review - The Absolute Sound