Regarding a Two-State Solution and Its Continued Rejection by Palestinian authorities...
The 1947 United Nations Partition Plan proposed a 3-way division of Palestine (with Jerusalem held separately under international control). This plan was rejected by the Arab Higher Committee and the Arab League (among other Arab leaders and governments). The Partition Plan, would have seen an Arab state over 42.88% of the land and a Jewish state over 56.47% of the land, with the internationally-administered Jerusalem comprising the remainder of the land. (from The Evolution of Borders of Palestine Throughout Modern History; Bashar Jumaa)
At a two-week Camp David conference in 2000, Clinton read a proposal to Yasser Arafat (a proposal which had been endorsed in advance by Israel). The proposal, as read, included "the establishment of a demilitarised Palestinian state on some 92% of the West Bank and 100% of the Gaza Strip, with some territorial compensation for the Palestinians from pre-1967 Israeli territory; the dismantling of most of the settlements and the concentration of the bulk of the settlers inside the 8% of the West Bank to be annexed by Israel; the establishment of the Palestinian capital in east Jerusalem, in which some Arab neighborhoods would become sovereign Palestinian territory and others would enjoy "functional autonomy"; Palestinian sovereignty over half the Old City of Jerusalem (the Muslim and Christian quarters) and "custodianship," though not sovereignty, over the Temple Mount; a return of refugees to the prospective Palestinian state though with no "right of return" to Israel proper; and the organisation by the international community of a massive aid programme to facilitate the refugees' rehabilitation." [the bold font is mine] (article from The Guardian, May 2002)
Yasser Arafat rejected the proposal and offered no alternatives. In fact, Arafat didn't negotiate at all.
In 2017, Hamas, in its Charter, said that Hamas considers Palestine to be based on its June 4, 1967 borders.
Palestinian authorities have never wanted a two-state solution.