Read 48 Laws of Power to prepare for navigating the toxicity. Here are a few to be aware of in times of uncertainty...
Never outshine the master
Conceal your intentions
Always say less than necessary
So much depends on reputation; guard it with your life
Court attention at all costs
Win through your actions, never through argument
Learn to keep people dependent on you
Use absence to increase respect and honor
Do not build fortresses to protect yourself - isolation is dangerous
Know who you're dealing with - do not offend the wrong person
Do not commit to anyone
Use the surrender tactic: transform weakness into power
Keep your hands clean
Enter action with boldness
Plan all the way to the end
Make your accomplishments seem effortless
Master the art of timing
Disdain things you cannot have: ignoring them is the best revenge
Think as you like but behave like others
Despise the free lunch
Avoid stepping into a great man's shoes
Do not go past the mark you aimed for; in victory, learn when to stop