Both, neither, it depends! I always say there were as many motivations as there were crusaders. We get this question fairly frequently so here are some previous answers that might help:

A "Saturday Showcase" post on Why did the First Crusade happen? by u/J-Force

Does anyone know of any contemporary sources detailing the motivations of crusaders on the first crusade in 1096? (by me)

And several older answers in the Crusades FAQ.