If you only have familiarity with more well-known tabletop games like DnD and Pathfinder, though, you might not be prepared for how different Call of Cthulhu’s system is. I was once in the exact same boat as you, and that’s why I ended up turning to Call of Cthulhu. Are you looking for a good horror-based tabletop RPG to play that isn’t a modified version of Dungeons and Dragons?
