I’ll answer the questions.

Not just Hamas but most of the planet is now an existential threat.

What should Israel be doing instead of going deeper into genocide is the following :

Immediate withdrawal from West Bank then mete out punishment to murderers and thieves who stole from Palestinians.
Leave Gaza IMMEDIATELY. Give Palestinians what is rightfully theirs.
Give reparations for decades of abuse of every kind imaginable.
That should neutralize Hamas and appease the world.
The question of ceasefire will not arise.