(Objection to the fine tuning argument) the multiverse argument

The multiverse argument:

(i already addressed this objection in the ''the fine tuning argument'' article,but i am just gonna put this over here as well in case some haven't read the whole article)

This is an argument that tries to debunk the fine tuning argument,and a lot of atheists say there are infinite universes so:

1:why infinite?why not 2?why not millions?

2:infinite or 2,or millions,it doesn’t matter,there must be a mechanic that creates these universes if this theory is true,but we don’t have any evidence for a mechanic like that outside of our universe,so you cannot say that a mechanic like that is the best explanation so therefore we don’t need an explanation for that mechanic.

3:if there are infinite universes,was there a first universe?and where did it come from?

4:let’s say this is true,and there are infinite universes,what’s 3 percent of an infinite?well...an infinite,so if i say right now that 3% of the infinite universes are fine tuned,then it means there is an infinite number of universes that are fine tuned,so the mechanic that makes this infinite fine tuned universes,seems to me like it must be actually more fine tuned then the universes,this kind of sounds like Richard’s “ultimate boeing 747”argument,i know,but there is no evidence for this kind of mechanic outside of our universe anyway,and i assume this kind of mechanic must be physical,and if we take it by the big bang,the universe came from no space,no time,no matter,so it wouldn’t even be close to being close to being close to being the best explanation.