For a slightly different take, a simulation and reality are not that fundamentally different given how both are perceived by senses in a similar way. Like how a VR headset uses the same sense that you use to see real objects.
They start to diverge in a way when you start encountering edge phenomenon that are beyond the scope of the simulation, like how a game would glitch. So far, however much we zoom in or zoom out, reality works consistently. So it is less likely that we’re in a simulation.