Mueller and team not being fired or even mentioned much is a sign. You need to ask yourself if Trump is oblivious to Mueller and team or not. Mueller and team have reason to get off the sinking ship, and that is only done by turning on your old team. Look at past legal takedowns of giant crime syndicates (mafia). It was only possible through the major help of insiders turning.
The most important fact is Trump and team were literally spied on for months prior to the election. If they had even the slightest hint of any thing, that card would have been played long ago. You can't play cards when you're bluffing, hence the swamp talking a lot but doing nothing.