Others have posted similar topics, but when I was in college many years ago I remember writing a paper on language death and relating it to modern trends in religion.
It was undergrad work and like 10 years ago, so take with a grain of salt when it comes to causation, but the correlation I found at the time echoes some of the other posters: a lack of perceived utility.
Religion offers some nice perks as a social support system. Can you get those some place else? Different church? Something outside of religion? Mix of both?
Some of the support systems may be irreplaceable. That is okay. We are adaptive creatures. Its scary, but maybe you will find some supports hindered personal growth or were not worth the trade off of being passive in the face of bigotry.
You don't need to decide everything all at once. Maybe there is a place to practice your faith with other like-minded individuals. Maybe you discover practicing a moral life doesn't need to be coupled to faith. To believe or not believe doesn't need to be decided at the same time as distancing yourself from hateful individuals.
KMFDM
German: Kein Mehrheit Für Die Mitleid aka No Majority For Compassion (No Pity for the Majority)
American: Kill Mother Fucking Depeche Mode
Loved them in the 90s through early 2000s when I was in my teens. Including the extended family like PIG, En Esch, and Skold. Last decade and a half have been meh.
Though I'm pretty sure everybody has fondness for the music they liked from teens through early 20s.