Laccuracy, lack of accuracy, is a simple plugin that adds adjustable inaccuracy to mobs and projectiles.
/setaccuracy <mob> <value>Sets the accuracy modifier for the target mob/getaccuracy <mob>Gets the current accuracy modifier for the target mob
You can set the accuracy modifier in the confg.yml file by adjusting this line:
accuracy:
skeleton: 0.2
ghast: 0.2
pillager: 0.2
blaze: 0.2
drowned: 0.2
bogged: 0.2
piglin: 0.2
stray: 0.2
witch: 0.2
wither_skeleton: 0.2
end_dragon: 0.2
breeze: 0.2
The config file can be updated in game using the /setaccuracy command.