The hostages are not a matter of negotiation.
Holding hostages is a war crime.
They need to be released at once.
If they are not released, Israel will come get them. Gazan fighters will be effectively dealt with. Gazan civilians should avoid being near those fighters.
Remember the tale of Moses and the Pharoah. Moses asked nicely at first.
Maybe there are no hostages, and if there are, Hamas most certainly doesn’t want their story told.