Exactly. I was in school back in the 1950s, and the school had an intercom system to make announcements in the classes. When the teachers left the room they would tell students that the principal had a switch to turn the loudspeakers into microphones, and everything that was said in the class would be heard by the principal.
Some students believed this, and some did not. You know how you could tell? Sure you do, by the way they behaved while the teacher was out. It’s the same with belief in a deity, 95% of the people who profess belief do not truly believe, and the evidence is how they behave. No one who believed in God would act the way they do.