getting into spirituality, bhakti improves jupiter, also when we incline toward god, bhakti, a thing in mind will always be there that god is watching us, stops us to do wrong things.
Also i read somewhere that it Jupiter is good in your chart it nullifies 80% of negative things in chart , but what it can’t change is prarabhadh karm.
prarabh karm we carry from past life and we have to face it in any condition. No remedy, bhakti will protect from it.

in the last i say is results of fixed signs aren’t changable, but that of movable signs we can extend