Don't rely on auto. Try this, your next photos should improve a
lot just by overriding the settings :
- set ISO to Highest/Maximum
- disable flash
- enable multiple bursts
- compensate for extra brightness or darkness using EV adjust. If
your photos are consistently too bright or too dark, then you know
you need to adjust. Don't forget to set it back to neutral when you
move on from the location.
These are band-aid fixes looking at how you are trying to shoot.
They are useless against Coolair and SICMAs, but I presume you
don't really want to cover them just yet.
i don't really agree to setting high/max iso thou. makes the pic
look real grainy. as for the bursts part i haven't tried it out
yet, haha.