Hey Trojan
I'm a professional mix engineer/producer/singersongwriter etc.
Try to attenuate frequencies first. For example, my go to reduction is always 300hz it just sounds muddy (unless on a Neve 1073 which still sounds amazing for some reason?).
If you want more bass try boosting 80-100hz. For midrange 3kHz is the sweet spot. As for high-end try 14kHz.
Also, what EQ are you using?
DEFINITELY reduce FIRST then BOOST if necessary. Turn the volume up once you have reduced 300hz to see if the bass is sufficient I would however argue that you would be better off buying a good pair of headphones or speakers and just not EQ at all!
Remember, a dedicated team of pros have spent a ****e load of monies on preamps, microphones, equalisation, compressors, multi-fx, acoustic isolation, diffusers, absorption, amplifiers, speakers, manual labour to make the record you are listening to a reality. Maybe trust the professionals' listening environment?!
I could go on for hours about this but I think I've made the point lol.