I just watched Sabine Hossenfelder's video (Gravity without Mass, https://youtu.be/Q0fwRMvNkoA https://youtu.be/Q0fwRMvNkoA) where she talks about hollow sphere

I just watched Sabine Hossenfelder's video (Gravity without Mass, https://youtu.be/Q0fwRMvNkoA https://youtu.be/Q0fwRMvNkoA) where she talks about hollow spheres. Inspired by this video I have this hypothesis: There's quantum fluctuation. Particles appear out of nowhere and disappear again. Hossenfelder talked about negative mass, so allow me to do this as well: What if a pair of two particles, one of negative and one of positive mass can very rarely appear? They disappear immediately again but for a short moment we have acceleration (more about that in Hossenfelder's video). Could this be enough to explain "dark matter"?