OP,
As others have posted above, REW is all you need. It takes practice and time to understand its power. It's free and all you need is the UMIK (amazon)
At first, it's a pain to understand but after a while you will get used to it and will learn its features you need to tune your room,
I did that "tuning" my room and after months of learning my room, REW told me where the issues are. I consulted companies like ATS for solutions. I got what they recommended and did another REW analysis. problem solved. After my ears got used to the new room treatment, I heard major improvements, like better tighter bass, no more echoes/reverbs and importantly, I heard space between the instruments and vocals are clear and I can hear more into the music. Yes the room is so important that no matter how good your gear is, the Room acoustics can make or break the final sound.
I was so impressed that I suggested that to another audiophile friend of mine who claimed his room is good enough. After running REW, he found out that his room is messed up. Well months later he showed me what improments he made using REW and boy was it worth all the hard work.
Understanding how REW works is a pain, but you need to know it. It is the essence of what you hear. NOW, if you don't have time for this, use a consultant and pay their skills.
In the end, Room acoustics is serious stuff.