Your history knowledge is very weak Guru dutt. Perhaps watch some videos from these Indian YouTubers. They may not be absolutely correct but they do give you a brief idea of what happened there in Palestine
The bottom line is, Palestine (and not Israel) was part of Ottoman Empire, which itself was a province of Egypt. Once the British disintegrated Ottoman Empire, The Egypt became independent and the British carved out the Muslim area of present day Palestine and Israel from Egypt as they simply could do it. They had secret agreement with both Arabs and Jews that if they help them they will give them Palestine/Israel. But once they war ended they couldn’t keep both parties happy so they asked United Nations to provide a solution.
The fact is, the Muslim Arabs were majority in this region for about 1300 years and they never took Jews seriously as they constituted 3-4% of the population but with the secret plan of British, the population of Jews increased to significant number which I can’t recall now from top of my head but let’s say 10-15%. The United Nations proposed the idea of giving about 57% nation to Israel and the remaining 43% for new Palestine state but the Arabs rejected it by underestimating the power of Israel.
The rest is history about multiple wars taken place with the Israel always supported by the British
The numbers mentioned in these video by Indian YouTubers seems slightly higher in favour of Jews but they still couldn’t find a reason to justify what happened in the 1920s and onwards. I hope I shared the right videos but you can check these YouTube channels for similar videos about the topic