Owner operator dump truck, end dump or live bottom

Been driving dry Van's and reefer for last 7 years.
Trying to get into dump trucks, end dump or live bottom.
Any lead will be helpful.
I Called some of the companies around Ottawa,ON but kind of getting same answer as they say when you have the truck give us a call they put me in their list and when they need me I will get a call. Is that normal or am I missing some (alot) information here.
Thanks in advance guys.
Stay safe out there .