One of the first things to do is to address the first reflection points on the walls. Usually absorbing type panels are used. I.E. Fiberglass, foam or hanging throw rugs etc.
After that, perhaps trying a more "plush" and larger carpet in place of your existing oriental rug.
Additional throw rugs could be tried in various positions.
Another area to consider is the ceiling. Quite often gains can be realized by using hanging "clouds".
Using smartphone acoustical apps or a Sound pressure level meter would be very helpful in understanding what is going on in the room.
Many good videos on their usage on Utube.
It is a challenge and a journey to get the room to behave.
After that, perhaps trying a more "plush" and larger carpet in place of your existing oriental rug.
Additional throw rugs could be tried in various positions.
Another area to consider is the ceiling. Quite often gains can be realized by using hanging "clouds".
Using smartphone acoustical apps or a Sound pressure level meter would be very helpful in understanding what is going on in the room.
Many good videos on their usage on Utube.
It is a challenge and a journey to get the room to behave.