i was trying "simple loot" and "better loot" but wosnt smart enough to use it

if you are using simple loot just open the config and where it says scrap 1, change it to scrap 3,

as easy as that and reload the plugin

i have done that but its only multipling drop from loot boxes and barrels

Please do not post the same question in multiple categories.

Though it currently has no maintainer, you could try https://umod.org/plugins/recycler-modifier