All the PC based FPV sims (see here) are pretty similar, BUT the DJI controller will not work with them, they require a controller of the type you would use with regular FPV quads. I think the cheapest we’ve found so far that will work with the sims is this one:
However, if you have an Apple device, DJI have their own simulator, which I believe works with the DJI FPV. Might be worth asking @group-dji-fpv if anyone has any experience of it.