I rebooted my N6P back to regular. my contacts, calendar info, and ringtones are gone. What do I do?

[AC Question]

i rebooted my n6p back to regular. my contacts, calendar info, and ringtones are gone. what do i do?

my nexus 6p wouldn't let me select a home launcher, so i rebooted into safe mode, and then i rebooted it back to regular. now most of my contacts, calendar info, and ringtones are gone. what do i do? It is really making me mad. Now i have to all of my work over again to get all my info back. is there any way to get everything back? thanks!