Looking at your original post - if you use those settings you are essentially strangling your Mexican P bass - a P is all about the mids and that EQ sucks them away.
Also a passive tone knob won’t boost the pass as the treble rolls off, it just doesn’t work that way.
Experiment with where you play on the bass - fingers or pick, play nearer the neck - it’s a fatter sound, nearer the bridge - thinner sound - you can get a variety within a song just by this alteration depending on what you want with no EQ changes.
I know I sound like a broken record and probably boring , but getting it all flat and your starting place for me is essentially, and then change one thing at a time till it balances.
Its a slow journey, but what you may also find is that the sound that works in a band may sound completely crap in isolation - for that reason I have one setting for the band photographed and remembered, but for home practice use another
You’ll get there