Mafia 107. Fever and Overdose

You are right that this is primarily my vision, and it is not a given that others will think the same way. However, I still find it hard to believe that all 4 mafia players are just playing for fun and aren't particularly concerned about the moves of others. It is very unlikely that the draw could have resulted in all 4 mafia players being inactive, or that all four signed up for the game just to fill in the gaps and are now simply "having fun." The presence of a hypothetical Yashur on the team would already indicate that there will be such concerns.

This thought seems more objective to me. That is, the presence or absence of such concerns is an indicator of who to look for or not look for in the mafia team, along with reasoning about immunities.
And it should be checked like this:
if a defensive strategy is detected instead of killing the father, then we look at what the immunities are and the players who are serious in terms of potential strategies; otherwise, nothing is known yet.
Or
if a player with the desired mindset is actually found in the mafia, then we look at the correspondence between immunities and the chosen strategy; otherwise, nothing is known yet.

Correct me if I'm wrong.