If you make a "Mod/" directory directly inside "Sky Rogue" (so, "SkyRogue_data" is NEXT TO "Mod", and "Mod" is NOT inside it), and then put mod folders inside there (ex: "Sky Rogue/Mod/modpack_name_or_id") it should load when you start the game, you should see it in whatever menu it should appear in (so aeros will be available in the loadout menu, weapons and skins in the individual weapon slots in the loadout menu, etc)