Cheers big help seeing as i am low on paintback on topic, theres loads of things you can train. Just filter out drills with people to shoot at and you have drills for
running and gunning
breakout accuracy
snapping
sliding / diving (work on your off hand with these)
connecting moves (sliding then getting shooting as quickly as possible)
you can also do agility and speed drills that's just to think about.
Most of these you can do without air/paint which is much safer
I think it shows determination to improve so ignore the big black woman and go for it.