I second the advice to take your instrument to a good tech'. I wouldn't be tempted to try to do a set-up/loosen the truss rod yourself (you do call your self Bass Beginner). Whilst that sort of thing is not that difficult if you know what you are doing, it's best left to a pro' unless you do.
If funds are ere tight, a decent set-up will be cheaper than a new instrument, unless you make a sideways move - i.e stick at the same quality level, which is not really worth the effort. It will also make your instrument more sellable if you do decide to change it.
I agree the sound could well be down to pickup height and/or string choice. Flats will generally give a less aggressive tone and if you use D'Addario Chromes (my choice), they are quite bright and lively and last well. Instruments are not really oriented to any particular style. Ibanez basses generally have slim, fast necks, which is why some rock/metal players prefer them.
Your amplification has a lot of influence on the tone, too. What are you using?