https://www.youtube.com/watch?v=OFqjA5ekmoY
Q-FFF Theory says: the Big Bang of our universe is the explosion of a huge String knot, the beginning of a symmetric raspberry shaped multiverse., by the reduction of the vacuum pressure on the Big Crunch ( mass less) dark matter string nucleus Black Hole of the former Eon, to explode into numbers of new mass less string black holes and evaporation into an oscillating string vacuum.
So you need mass less Strings of the same size of a mass carrying electron ( or positron) in the beginning.
However it seems also a cyclic system without a beginning or definite end of the system itself.
However, the; Q-FFF model says: we need a transituion from strings into fermions, by the new dual charged black hole systems of Herbig Haros.
For "Something out of Nothing" see also:
The Bouncing CP symmetrical Multiverse, based on a massless but energetic oscillating (non SM Higgs) Vacuum Particle System.
and: The Origin of Universal Structure: Herbig Haro Strings by Electric Dark Matter Black Hole Systems.
https://vixra.org/pdf/1904.0599v2.pdf
One question remains: The origin of the redshift of stars far away?
(now explained by vacuum acceleration ?)
Q-FFF model says: Redshift also by the elongation of the local Planck length, by multiple black holes vacuum eating or elongation of the chiral vacuum lattice.