OP.
The good thing I see in your room is carpet, wall to wall, which is good.
Would you/have you tried your system on the long wall? Short wall can be fine but it looks like your speakers are a bit to close to the side walls. Usual (but not limited to) distance from side wall is 3 1/2 feet to 4 feet. General ill effects are midrange colorations.
The recommendations for room treatments are a very good idea also.
The good thing I see in your room is carpet, wall to wall, which is good.
Would you/have you tried your system on the long wall? Short wall can be fine but it looks like your speakers are a bit to close to the side walls. Usual (but not limited to) distance from side wall is 3 1/2 feet to 4 feet. General ill effects are midrange colorations.
The recommendations for room treatments are a very good idea also.