[WindyLakeReturn]

A changer that initiates a single change is themselves changing, from a state of not implementing change to a state of implementing change. This also assume a foundation of before and after, that there is a sense of time.

This is like looking at the big bang and asking why caused it. If something caused it, why did it cause it when it did and not before or after? Is there even a before or after when discussing the cause of the big bang?

The answer is that is we don't know. We have no knowledge on what is before then, why did time start when it did, and if logic even applies to given the lack of time or the possibility of other dimensions of time that is harder for us than seeing in 4 spatial dimensions is.

There is also an issue with Lemma 2. Why can't there be an infinite tower going forever? Even if something caused the start of time, something had to exist before that. Suggesting a first event might be akin to suggesting a starting number.

At most, even if we ignore all these problems, you just proven a starting point exists. Nothing about the starting point, nothing to claim it is a deity, much less the Abrahamic one. The beginning could also just be the big bang, a starting point with no before.