We have bike lanes here, for the most part, and I stay in them or ride on the far right shoulder.
If I need to make a left turn, I claim the lane, like a car.

On roads with two lanes in each direction and stopped traffic, if I need to make a left turn, I ride (relatively slowly) between the two lines of cars, all the way to the front of the line where I stop in front of the first car in the left lane, make eye contact and point where I intend to go.

I don't track stand (but I intend to learn how to track stand, someday).
I clip out with my right foot and put it down.
I don't have any trouble pedaling with one foot for a short distance if I need to fit into stop and go car traffic.
If forced to the shoulder and unable to thread safely between the cars and the curb, I put my right foot on the curb, pedal when necessary with the clipped-in left foot, and then put my right foot back on the curb or the road.