Games like Notebook Entries Vol. 1
Games like Notebook Entries Vol. 1 include The Forest, Outlast, Resident Evil Requiem, The Hat Man: Shadow Ward, and [Chillas Art] The Convenience Store. We matched them by the tags players give Notebook Entries Vol. 1 on Steam (Simulation, Horror, Survival Horror, Casual, and Atmospheric): closest matches first, and among equally close ones the better-known games.

The Forest
Shared: Horror · Survival Horror · Adventure

Outlast
Shared: Horror · Survival Horror · Atmospheric

Resident Evil Requiem
Shared: Survival Horror · Horror · Action

The Hat Man: Shadow Ward
Shared: Horror · Atmospheric · Adventure

[Chillas Art] The Convenience Store
Shared: Horror · Simulation · Casual

Choo-Choo Charles
Shared: Survival Horror · Horror · Adventure

METRO 2033 Redux
Shared: Horror · Atmospheric · Survival Horror

[Chillas Art] The Closing Shift
Shared: Simulation · Survival Horror · Adventure

Five Nights at Freddy's: Secret of the Mimic
Shared: Horror · Adventure · Survival Horror

Escape the Backrooms
Shared: Horror · Survival Horror · Adventure

Five Nights at Freddy's: Security Breach
Shared: Horror · Survival Horror · Adventure

Resident Evil Village
Shared: Horror · Survival Horror · Action

Scanner Sombre
Shared: Horror · Atmospheric · Walking Simulator

Resident Evil 7 Biohazard
Shared: Horror · Survival Horror · Atmospheric

METRO Last Light Redux
Shared: Atmospheric · Horror · Action

Lethal Company
Shared: Horror · Survival Horror · Atmospheric

Backrooms: Escape Together
Shared: Horror · Survival Horror · Atmospheric

The Cabin Factory
Shared: Horror · Walking Simulator · Atmospheric

The Callisto Protocol™
Shared: Horror · Survival Horror · Shooter

Darkwood
Shared: Horror · Survival Horror · Adventure

Inside the Backrooms
Shared: Horror · Survival Horror · Adventure

The Beast Inside
Shared: Horror · Survival Horror · Adventure

Resident Evil 4 (2005)
Shared: Survival Horror · Horror · Adventure

Firewatch
Shared: Atmospheric · Adventure · Walking Simulator