So, I’m the youngest in my workplace and all my coworkers (40 years old) are complaining about each others to me (in my low 20s)

Coworker 1 and 3 will complain about coworker 2,

Coworker 2 will also complain behind their back about coworkers 1 and 3.

Coworker 3 will complain about coworker 4, etc.

The manager and GM are “friend/close” to all of them, and seem to not really take any actions.

I’m trying to be wise, so I usually act as if I’ve never heard of the incidents even when I did. For example, when coworker 3 will tell me his argument with coworker 1, I’ll answer as if coworker 1 didn’t already tell me what happened .

I’m tired of being in the middle of this. What can I do ?