Is it possible to reach the Zionist goals without the suffering and ethnic cleansing of the Palestinians 4 ?

No. Whether it is political, labor or cultural Zionism , all were based on an establishment of a Jewish majority when the Jews were a tiny minority in Palestine. There is no other solution except the ethnic cleansing of Native Palestinians to reverse the demographics.
Zionist leaders saw Palestinians as savages, rocks, obstacles, children …. etc with no right to rule.
As long as the racist settler colonial ideology of Zionism exists, Palestinians will always suffer.