Here is the “Matt Williams is losing the clubhouse” article. These tend to be the death knell for a skipper.
In the clubhouse, there is a sense among some players of indifference toward their manager. Players understand Williams was in a challenging position: a first-time manager tasked with leading a World Series favorite, but they also see in-game decisions that have backfired. Some privately have questioned playing time choices and pitcher usage. And sometimes lack of playing time, a quick hook from a game or in-game strategic call from the dugout can be interpreted as a lack of confidence.
No one spoke on the record, so take it with a grain of salt.