Epic and lyric odds/drop rates?

so i’m level 77 and am still yet to get an epic or lyric drop. i’ve gotten 3 moments so far and i know they aren’t as rare but im just curious what the actual odds are of getting them?

so i’m level 77 and am still yet to get an epic or lyric drop. i’ve gotten 3 moments so far and i know they aren’t as rare but im just curious what the actual odds are of getting them?