How to reread games

[iavh]

This is a great question. *pats self on the back* Mistlo's question "how to state and convince people that someone is scum" or something really made me rethink everything.
I've been told this a lot, along with getting more experience.
So let's start. Most people find this hard. Me included. So basically, the fact it's so hard to me is that everyone's roles are in my head. That and the fact that I don't really know what to take away from everyone's gameplay.
uhhh any tips guys?

[ForgotToFlush]

Most immediate starting point I can think of is trying to understand the flow of the game
Good scum players have a plan and they try to act on it (commonly referred to as agenda). Posting for the sake of posting might make an individual player look townie, but they aren't advancing a wincon
The agenda doesn't stay the same the whole game, they pivot when needed to a new agenda
Good players therefore plan and adapt as the situation demands

Take Countdown 5 for example:
After Night 1, Mafia put a plan together and acted on it
It should be easy enough to see the difference in gameplay from each player between day 1 and day 2, that's the pivot point that can make it easier to discern alignment

If you look at this in a more abstract manner, then you can start seeing how the flow of the game is affected by the agenda
As people make actions according to their wincons, the game naturally progresses

Does nobody seem to care about the eod vote? Then the person dying might not be relevant to scum's interests. The opposite holds, if people are really invested, then the people involved might have agendas
This is a small example but it demonstrates the line of thinking
So when you reread games, if you start thinking like that, then it might be clearer why things are happening at any given point
Very rarely is any decision truly inexplicable