Every shot taken will have a random chance of hitting its target or completely missing. A very simple plugin that you can use to expand on if you want to.
Source via GitLab
Open the archive and copy the
shoottomiss/ folder into your
How to Use
s2m_chance config value either in the System menu or via command. The default value is set to 0.25. This means that shots will have a 25% chance to it, the value ranges between 0 and 1.