TFC's cave-in sounds are quite jump scare worthy, but not enough, let's fix that for you.

This resourcepack does nothing more than enrage the cave-in and landslide sound effects, raising them from horrifying to absolutely pain inducing, aka an acceptable level.

Use at your own risk.
You'll probably want this instead: https://www.curseforge.com/minecraft/texture-packs/tfc-subtle-cave-ins