My custom block tag doesnt work

I want to add a tool that can mine specific blocks faster I created a metalic_blocks.json file and put it in namespace / tags / blocks
then I gave me the tool with /give @p iron_axe[attribute_modifiers=[{id:"attack_speed",type:"attack_speed",amount:1,operation:"add_value",slot:"mainhand",display:{type:"default"}}],tool={can_destroy_blocks_in_creative:true,default_mining_speed:1,damage_per_block:1,rules:[{speed:100,correct_for_drops:true,blocks:"#metalic_blocks"}]}] 1 ,
the file is: 
  "values": [
    "minecraft:iron_bars",
    "minecraft:iron_block",
    "minecraft:iron_door",
    "minecraft:iron_trapdoor",
    "minecraft:chiseled_copper",
    "minecraft:copper_block",
    "minecraft:copper_bulb",
    "minecraft:copper_door",
    "minecraft:copper_grate",
    "minecraft:copper_trapdoor",
    "minecraft:cut_copper",
    "minecraft:cut_copper_slab",
    "minecraft:cut_copper_stairs",
    "minecraft:exposed_chiseled_copper",
    "minecraft:exposed_copper",
    "minecraft:exposed_copper_bulb",
    "minecraft:exposed_copper_door",
    "minecraft:exposed_copper_grate",
    "minecraft:exposed_copper_trapdoor",
    "minecraft:exposed_cut_copper",
    "minecraft:exposed_cut_copper_slab",
    "minecraft:exposed_cut_copper_stairs",
    "minecraft:oxidized_chiseled_copper",
    "minecraft:oxidized_copper",
    "minecraft:oxidized_copper_bulb",
    "minecraft:oxidized_copper_door",
    "minecraft:oxidized_copper_grate",
  ]
} ```
 ty for helpong me (I deleted a few blocks so the message isnt to long)