Trying to make a custom item for a server but it wont work

This command is supposed to give me a custom item for a server. Why won't it work?

give @p minecraft:netherite_sword
{
  display: {
    Name: "[{\"text\":\"Kindness (¾)\",\"color\":\"red\",\"italic\":false},
    Lore: ["{\"text\":\"\",This sword was forged from the deep depths of The Blazing Tundra it was weilded by the greatest swordsman in the land but was sadly lost many years ago.\"color\":\"dark_purple\",\"italic\":false}",
    Unbreakable: 1,
    HideFlags: 7,
    Health:32767s,
    Age:-32768,
    Enchantments: [
      {id: sharpness, lvl: 10},
      {id: smite, lvl:10},
      {id: bane_of_arthropods, lvl: 10},
      {id: fire_aspect, lvl: 10},
      {id: knockback, lvl: 10},
      {id: looting, lvl: 10},
      {id: sweeping_edge, lvl:10}
    ]
  }
}

Solution 1:

building off of ginkgo's answer, you do in fact have multiple syntax errors. i'll go through them one by one here.

1. at Name, unclosed quotes; the full value needs to be wrapped in quotes
2. at Name, unexpected square brackets ([]); Name does not use square brackets as those are only used in lists, and it can only support one value
3. at Lore, unclosed square brackets; Lore is a list, and needs to be wrapped in square brackets
4. at Lore, malformed JSON string; there's an extra quote right after text
5. at Unbreakable, bad formatting; Unbreakable needs to be a Byte value, which means it needs to have b at the end of it (e.g. 1b instead of just 1)
6. at HideFlags, bad formatting;

there are also some tags that are simply not used in an item tag that you're giving to someone;

1. Health; only used in entities (things like mobs, players, etc.)
2. Age; only used in entities

edit; it's good to try to put it in a single line the way ginkgo did, since that's how commands are typed in Minecraft, but i'll post the command here formatted the way you did;

give @p minecraft:netherite_sword
{
  display: {
    Name: "{\"text\":\"Kindness (¾)\",\"color\":\"red\",\"italic\":false}",
    Lore: ["{\"text\":\"This sword was forged from the deep depths of The Blazing Tundra it was weilded by the greatest swordsman in the land but was sadly lost many years ago.\"color\":\"dark_purple\",\"italic\":false}"],
    Unbreakable: 1b,
    HideFlags: 7b,
    Enchantments: [
      {id: sharpness, lvl: 10},
      {id: smite, lvl:10},
      {id: bane_of_arthropods, lvl: 10},
      {id: fire_aspect, lvl: 10},
      {id: knockback, lvl: 10},
      {id: looting, lvl: 10},
      {id: sweeping_edge, lvl:10}
    ]
  }
}