Hey there
Yeah, Foxy is the main antagonist here, my strat for her was to do a "right-left" in the office then look at Foxy for a sec or two, right left again, and again. She still attacked me 3 times but I beat it 4/20.
Oh, Chica isn't really a problem, but for Bonnie, when you see her, count 4.5s, she's often gone after that.
And when Freddy laugh for the 5th times, put your cam on cam6 and never, under any circumstance put it away from it, Freddy is now innofencive ! You now have to deal with Bonnie, Chica and Foxy by sound only, yes, but it's a massive economy of power.
I hope those advices help you and anyone who read this ^^