The One State Solution

 A single state, with equal rights for all and no discrimination regardless of religion.

That's the preferred outcome in the Hamas Charter of 2017.

(There's not a single word about pushing Jews into the Sea, etc.)

However, Hamas also accepts a true two state solution as an interim measure.

Most Zionists in Israel, including Netanyahu, insist there will never be a Palestinian State.

Hamas Charter of 2017.  I find it to be very reasonable and well written.

Here is Tony Greenstein discussing why the Two State Solution is simply a continuation of fascism.

One state was the demand of the anti-Apartheid movement in South Africa. Only far-right White racists wanted a White state. The two-state solution in Palestine, which the West supports, is an apartheid neo-colonial solution. It leaves a racist Jewish state intact.

 Tony also claims this is view of the widest majority of Palestinians, which I believe is true.

Even more ubiquitously, the "two state solution" is views as an excuse for doing nothing.  Everything about the second state will need to be endlessly negotiated.  The result of an earlier round was the widely denounced Palestinian Authority, which operates more like a corrupt security contractor for Israel than an actual state.  Israel will never accept an actual sovereign Palestinian state, as such a state would be able to buy arms openly and defend itself.  Israel wants a puppet it can control.