It is independent because it expresses a complete tought.
An agent went rogue once an enemey killed his fam.
It is a simple sentence because it has one subject and one predicate.
Angrily, Hamlet denies having given her anything; he laments the dishonesty of beauty, and claims both to have loved Ophelia once and never to have loved her at all. Bitterly commenting on the wretchedness of humankind, he urges Ophelia to enter a nunnery rather than become a “breeder of sinners” (III.i.122–123).