As everyone probably remembers, Zabuza was kicked out of Kiri because he tried to assassinate the Mizukage who was most likely Yagura at the time. With this, Zabuza was initially portrayed as a hired assassin who was a traitor to his village; but after he died, he and Haku were portrayed more as good guys who just wanted to help their village
What I think really happened was that Tobi approached Zabuza after Kisame got kicked out of the village so Zabuza could personally work for Tobi just like Kisame did. But after Tobi realized that Zabuza was loyal to his village unlike Kisame, he and Yagura tried to kill him. After Zabuza was seen by Yagura's guards, Tobi probably warped away and it probably looked like Zabuza was trying to kill Yagura. That's why he escaped the village and was trying to raise money so that he could go back to Kiri and start a revolution there, because he knew that the Kiri was really being run by Tobi
We know a decent amount of info about Onoki and Iwa, we know a lot more about Kumo, Bee, and A, we know almost everything about Suna and Konoha, but we hardly know anything about Kiri. I honestly want to see an entire flashback about Kiri so we could figure out exactly what happened there when Tobi was controlling the village. It sounded pretty evil with the amount of killings and massacres they had in their village. But I think that Kishi is saving that flashback for after we find out Tobi's identity
What I think really happened was that Tobi approached Zabuza after Kisame got kicked out of the village so Zabuza could personally work for Tobi just like Kisame did. But after Tobi realized that Zabuza was loyal to his village unlike Kisame, he and Yagura tried to kill him. After Zabuza was seen by Yagura's guards, Tobi probably warped away and it probably looked like Zabuza was trying to kill Yagura. That's why he escaped the village and was trying to raise money so that he could go back to Kiri and start a revolution there, because he knew that the Kiri was really being run by Tobi
We know a decent amount of info about Onoki and Iwa, we know a lot more about Kumo, Bee, and A, we know almost everything about Suna and Konoha, but we hardly know anything about Kiri. I honestly want to see an entire flashback about Kiri so we could figure out exactly what happened there when Tobi was controlling the village. It sounded pretty evil with the amount of killings and massacres they had in their village. But I think that Kishi is saving that flashback for after we find out Tobi's identity