1.Michael afton is possession glamrock freddy which is the reason why he want to help Gregory so much and in a way that glamrock freddy feel like he in control in his own body also to point out (disclaimer play the game first before you read this) in a ending glamrock freddy put the pizzaplex on fire and say " it time to in this" to me this feel like a call back to Michael because he know how fire can release the souls and put in ending to afton same reason why Henry did it

2. Another reason why freddy want to help us is because is because he was programmed to just like the rest of his friends but vanny or vanessa didn't get the chance to because freddy was in like some sort of lockdown in parts and service where she couldn't get in but had a chance to hack everyone else and make them bad.

Bonus theory the reason why Monty was breaking down in his room because he was fighting the program that Vanessa put into him;)