I'm sure it will be frustrating at first, just like most things in life that require actual learning.
As for EQ (auto and manual), most audiophiles would agree that the bass/subwoofer (below 200Hz) is most likely to get the most benefit.
Some people feel that they do get benefit from a flat in-room response (20Hz-20kHz),some don't.
So if you are willing to go through the process of learning and frustration, you can see for yourself if EQ is the right thing for you.
I'm just saying many audiophiles don't like the idea of any kind of EQ.
The goal is to achieve the best sound you can hear.
If you get that from having a flat in-room response, then that's the right thing for you.
If getting a flat in-room response for the bass and other frequencies (20Hz-20kHz) makes the sound less enjoyable or less natural or less lifelike to you, then turn off all EQ like some of us do.