Hey so in my past few LDs i have seem to be very limited in dream control

like the other night i was LDing and was trying to make a person appear when i would turn the corner and they would never appear i tried 4 times

and the other night this DC was being a total douchebag and i tried to light him on fire and it didnt work

i have gotten into this mindset where i feel totally limited by what i can do in an LD i don't even think i can fly

can someone help me out?