Next rehearsal take one song where you lock in and try a couple of takes with different sounds (have maybe 3 or four different eq settings and write them down) - try another song with those same various settings record it all on you phone if you can (or all of you can) listen back with headphones and sus out what it is you're liking or disliking about the sounds as a band and specifically as the bassist - have the others do this too.
An important part of being in a band is having a sound -collectively- knowing where you'll fit in the mix. At least one or two rehearsals should be spent working on that if you're kinda into sounding as good as you can.
I'm sure the OP has an idea of what he likes but that kinda has to balance with the other instrumentation.
Example
In my covers band the singer/guitarist who claims to be have been a soundman for years thinks turn up the bass is what a bass needs in a mix but totally neglects the mids - what they mean to a mix, how they impact on the tone of the band or how cutting frequencies in this reigion can mitigate feedback and let all instruments be heard and have thier own space to breath in a mix. He only recently realised the desk he uses has a sweepable mid channel and a volume for that channel and couldnt figure out why the fiddle kept suffereing from feedback! To be fair he's a bit of a chump
Bottom line is use rehearsal time to experiment - its a known thing that P basses sit well in a mix because of their mid's as much as their bass....or join a dub band
Good Luck sir!