How can I actually be useful at my parish?

Community man. We call this the church gigachad. This is somebody that everyone can rely on in the parish community, that is able to help with any task that comes up, is utterly reliable, helps in the altar, helps in the choir, all of these things. This is definitely saint-maxing. When the priest knows that he can rely on you and that you're going to be there, I will tell you, he will hold you in very high regard, and your contributions to the parish are absolutely exceptional.