Use the bus schedule for the route you're waiting for to determine when your bus will arrive. If your stop is between two listed timepoints, your bus will arrive some time after the upstream timepoint. Wait at the bus stop at least five minutes before the bus is due to arrive. When the bus is approaching, make yourself visible to the bus driver.
You can find real-time bus arrival information on the Umo Mobility smartphone app, as well as other third-party apps.