How to make a horror movie

The very first thing you need in writing really any movie is a well written and clear script

Now you need a good setting. The creepier the better. Make sure to find one reasonably close by to keep travel as light as possible

Having good makeup for your monster is what will truly make it scary

Sex is a very important part of horror, it disarms and puts the viewer in an awkward state considering the setting

So that's most of what you need for a good horror movie. Every movie is going to have its own creative twist to it so change it up to your tastes. Thanks for viewing!