List the most tragic/worst ones in your opinion...Jesus crucifixtion excepted.
Some come to mind
Abel...slain by his own brother
Samson...crushed by pillar he pushed over along with Philistines
Jezebel....fell out of palace and blood licked up by dogs
Absolom...hair stuck in a tree
John the Baptist....beheaded on a platter
Tragic, or ignoble? Abel's death was righteous, to my thinking. Samson's glorious. Jezebel's ignoble. Absalom's well-deserved. John's - wicked/corrupt/cowardly (murder by Herod and his brood).
If by tragic, you mean lives could have been spared if things had only been a little different...
The men of Shechem, who might have been spared if they punished Shechem to begin with, or properly repented to Jacob for his crime.
Aaron's sons Nadab and Abihu, who were consumed by God for offering unauthorised fire.
Achan and his family, who were stoned for stealing from God.
200 philistines, who were harvested for skins by King David as a brideprice for princess Michal (if only they'd converted to Israel, their lives would have been spared)
The two groups of 50 men who came to arrest Elijah (and were burned up by fire from heaven due to their captain's lack of reverence)