Measure the room before making any purchases.
IMHO @freediver panels could address some frequencies but for bass problems you need other products with much more mass.
On a prior home (room was 10x11x8), I “removed” the corners with PEG board and filled the empty space behind with Corning pads. Then covered it with speaker fabric.
I used a thick pile carpet with double padding on the floor and wrapped 6 Corning pads with fabric for first reflections.
It sounded great.