Replying...
Intro. After you entered the curseforge website where there were mods for minecraft java type of horror, then you searched for "dweller" after you entered the horror mods page like "cave dweller" after you got down you found a mod called "Muder drones Cyn dweller" you were surprised so without wasting time and you installed it for version 1.20.1 Then good luck...

Cyn horror mod for minecraft java

@Rick9000