Unlike the last 2 games, there really isn't a general strategy to use, as this game is a lot more flexible.

First, just look for Springtrap in the cameras. He can start anywhere from cam 05-10, so you'll have to look around for him. Also, I recommend sealing whatever vent is closest to Springy, so if he goes in the vents, you'll pre-emptively seal him off. If you lose him, look in the cameras nearest to where you last saw him and if you hear bumping in the vents, it means he's in one, so seal it fast, as all of them lead directly to the office. If you see him, use the audio in a room next to him and then lead him back to the room you want him in. I usually like to keep him in 09 and 10, but I've seen people put lead him to 07 or 08.

This is one I've seen used for night 6 a few times, but I found it from Taste Gaming on youtube.
https://www.youtube.com/watch?v=qk8CXEpxVuc

For this strategy you want to start by finding him, then getting him into any room, like the last strategy. This time you want to seal the vent like last time and then if he moves, play the audio in the room he left from, then go reboot the audio so it doesn't have an error at the wrong time. You just repeat that a few times and hope you get lucky.

-Try to reboot the audio right after you use it, to prevent losing it at the wrong time. This is especially effective on nights 5 and 6.
-When you go to the left, quickly go halfway to the left and then snap back to the right to see if Foxy is there. If he is, then open and close the camera so he leaves.
-Try to seal the vent nearest to Springtrap.
-If 2 things go offline at once, reboot all, it's faster.
-Try to form priorities as to which things you reboot in a certain order. Mine is this:
1. Audio
2. Camera
3. Ventilation
-Study the cameras for Springtrap, as he's really hard to see.
-If you see him in the window in front of your office, you can still get him back to cam 02.
-If the ventilation goes offline you'll see multiple Springtraps, so be on guard for a few seconds after the ventilation goes offline.