Dateline NBC Season 32

I have noticed that not all episodes for season 32 of Dateline NBC are available. Is it possible to find the following
episodes with possible magnet links?

S32 E15 "The Murdaugh Murders: Inside The Investigation"
S32 E24 "Family Matters"
S32 E28 "The Secret of Black Rock Canyon"
S32 E31 "The Killer on Camera 4"

Thanks in advance!

All I could personally find is the following:

S32e31:
nbc.com/dateline/video/the-killer-on-camera-4/9000370311

32-28
nbc.com/dateline/video/the-secret-in-black-rock-canyon/9000370307

32-14 & 15 locked and no magnets