The Principle of Contingent Causation: The Impossibility of Infinite Regress.

[Deesse23]

Obviously, when we total up all the stuff that's out there -- all the stuff that makes up the universe -- nearly all of it is clearly contingent….

We know almost nothing about "all the stuff that's out there". 
Dark Energy and Dark Matter comprise 95 % of this universe. 
We know nothing about what it is or how it acts. 
We know about 5 % of what comprises this universe. 
We know very little about reality between the quantum world and the macro world. 

If there are other universes we know nothing about them, or about the environment within which universes launch. 
Roger Penrose's Infinite Cycles proposes no cause is necessary at all. 
 
https://www.youtube.com/watch?v=K_FUlo8BF9Y

Exactly. And if energy can not be created or destroyed, its not contingent. Ergo: All the stuff that makes up the universe -- nearly all of it is clearly NOT contingent….