It will likely take a lot of "editing" to get yourself or anything for that matter, inserted BEHIND an actor in the clip. I dont think that there is any video editor out there that can do that with a preset function.
What it takes is
A copy of the clip in the background.
On top of that a clip of you, taken with a green screen, removing the green, so that you are present as part of the clip
And then on top of that a copy of the original clip (already in the back ground), in which the actor who needs to be in front of you, is all masked out. This masking should be done very precisely, otherwise you will see what trick is being played. Not trivial at all. Probably a frame by frame setting. I think that the options in the most recent version of PD (20) is better suited to do such masking.