What's the name of this philosophy?

Definitely not nihilism. More of “laissez-faire”.

Or as some would say “Que sera, sera” – listen

Was thinking it’s nihilism because of the life lacking meaning aspect of it.

The “everything happens by chance” part—I take it he actually means “everything happens at random,” which is technically not the same—is not talked about much by philosophers. When it is, however, it is typically referred to as “stochasticism.” The conclusion that therefore nothing matters is, in fact, a type of nihilism (specifically, existential nihilism).

^thanks for your help.

It’s not nihilism, as it’s somewhat optimistic by comparison. To me it’s an offshoot of chaos theory in physics, applied (or attempted)
at the level of a working
philosophy. In that sense I think it is misapplied at this macrolevel. He is mistaken to think that everything happens by chance. I could decide to pound my thumb with a
hammer. To anyone but an absolute fatalist, that would not
be viewed as having happened
by chance. Some things, of course, do happen by chance,
but not all things. Clearly, it is not accurate or helpful as a governing philosophy to say
that nothing I do matters because there exist happenings by chance and randomness in
the universe.

@SavoirFaire Just curious – who talks about stochasticism? That’s not a term I’ve encountered yet, and the internet is not forthcoming, not even the SEP.

@SavoirFaire , I thought that existential nihilism was the belief that nothing has intrinsic meaning, but we get to assign our own meanings.

@GTobia There are varieties of nihilism. That this is not the most pessimistic form you can think of doesn’t mean that the view isn’t nihilistic. Also, a fatalist is the opposite of someone who would say it happened by chance. The counterexample is still on point, however. It is quite clear that not all actions happen at random or by chance since directed actions demonstrably exist (and we perform them every day).

@wildpotato I don’t know if I’ve ever seen it in print. It’s the term I’ve heard tossed off for the view by a few metaphysicians (in the context of mapping the logical space of the free will debate). The few times I’ve heard the term used, it was clearly brought up just to dismiss it; so I’m not terribly surprised that it doesn’t appear on SEP. (Have you by any chance heard other terms for the view? I’d be interested if there is any sort of rival convention forming elsewhere.)

@LostInParadise Existential nihilism is the view that nothing has intrinsic meaning. It also contains the view that nothing we do really matters. The idea that we get to assign our own meanings is the existentialist response to existential nihilism (whereas the nihilistic response is to just conclude that nothing matters at all).

@wildpotato a paper on Determinism vs Stochasticsm (as it relates to epidemiology)