All above tone stack comments are true and will help. Just one other trivial thought for you though - cab positioning!
Moving your cab around in relation to ‘room boundaries’ affects the sound - a lot! Most noticably the low end. Unless you are flying your rig near the roof the important room boundaries here are floor, back and side walls, and especially corners where they are combined.
Often a few inches can make a surprising difference. The easiest way to show that is just to raise the cab off the floor by different amounts. Bunging it on a beer crate or stool can help cure boom. (Maybe with a thin layer of foam - or my secret weapon an ‘astroturf’ doormat - under the cab to keep things secure and prevent rattles). As can simply moving it away from nearby walls / corners. The great thing about doing this is that you can really fine tune the lows, at least as effectively as with the amp EQ because different gaps from room boundaries will affect a different range of frequencies. Also really effective are things like ‘Gramma Pads’, especially on creaky wooden stages.
I often do small gigs / jams with a Micromark combo (1x6” or 1x8”, I have both) with just a single (VPF = mids scoop) tone control. Still have good control of the bass and treble ranges too though - the tone control on my bass for treble, and room positioning for the bass!!!
I always try to put my cabs where they SOUND best, not just where they LOOK best!