"Sacrament" means "oath"; the original sacramentum was the induction oath into the Roman army. Do you see any evidence of oath-taking in the Bible (try Hebrews).
Where does Jesus list them?
I would suggest that Jesus instituted every one of them in the Gospels, except for confirmation and extreme unction.
Where does Jesus tell us that He distributes parcels of grace only through them?
Nowhere, of course, because that isn't Catholic teaching.
Then why do Catholics say grace is received through the sacraments?