Problems

Why doesn't this work? It works when i enter it manually in chat.
execute as @a at @a if entity @a[nbt={SelectedItem:{"id":"minecraft:diamond_sword"}}] run tellraw @a [{"text": "Bought:"}, {"text": " Maw of Malmortius", "color": "purple"}]
execute as @a at @a if entity @a[nbt={SelectedItem:{"id":"minecraft:diamond_sword"}}] run execute as @a run item replace entity @a container.9 with diamond_sword