Nothing starts on a specific date even the Superbowl, as there are months of planning leading up to it and other events impacting it as well. October 7th wouldn't have happened if Gaza wasn't walled off (literally) from economic expansion, which wouldn't have happened if terrorism plots and attacks hadn't been launched from there into israel, which goes back and fourth on and on back to Israeli independence and the Nakbah, and all the Arab Israeli wars shortly there after with the explicit reason to destroy the cou try, which wouldn't have happened if the Holocaust and anyi Jewish sentiment, from people within the british, German and Palestine mandate territories, leading to assassinations and pogroms some supported by people such as Amin al-Husseini who explicitly supported the Holocaust, and the revocation of a two state solution from the Arab states and refusal to recognize Israel as a state. Was it a good idea to create the state of israel there is no longer a conversation that has any reason to be had for an actual solution as the cou try exists and within internationally recognized Israel the residents by and large were born there and some for generations more so than the existence of the state by centuries. A productive discussion would be one to get israel to dismantle the settlements in the west bank and to stop the killing in Gaza, not trying to wish death on a country for the actions of a political elite doing war crimes to keep their power and reducing democracy. Think of your own government and country's history and tell me how it is different from that of Israel at a certain point, genocide ethnic cleansing, colonization, are a hallmark of almost all countries the way to stop those cou tries from doing those things is to have greater democracy within the country and greater economic and social ties to their neighbors which would be disrupted by war, encouraging those ties has been half hearted at best until somewhat recently and haven't really included Palestine, and is I believe the main reason why there is tension, because there is only boycotting Israeli products as an economic disincentive for their actions against Palestine and the few economic incentives for the west bank and Gaza not to open hostilities with Israel are small as well, a lot by design from Hamas in Gaza and the Palestinian government on one hand and the Israeli government on the other as it would reduce their political power on their people. Prior to October 7 the west bank was in a period of raprochement (political cooling of tensions due to the courts in Israel starting to side with their claims more than the Netanyahu regime) with israel as was Saudi Arabia and this threatened Iran who used promted their proxies to try to sabotage the expansion of the Abraham accords, thus October 7, the Israeli attacks on and from Hamas Hezbollah and the Huthis, and eventually to the current war in Iran. Everything is linked you could even say that this situation probably wouldn't have happened if the Serbian assassin Gavrilo Princip didn't assassinate the ArchDuke Franz Ferdinand in 1914, but we aren't fighting world war 1 today just the consequences of it and shouldn't play the blame game when there are still problems to solve to stop the bloodshed, simplifying things to make a bad-guy and try to find a simple solution is how ethnic cleansing and genocides and ghettos are created kicking the can down the road and causing so much undue harm. It is important to know the sequence of events that led to climactic points in history.

TLDR: you can't find a specific point that caused any specific action to happen to start the current conflict as there are inciting incidents that have inciting incidents, to solve the issue closer ties between israel and its neighbors (especially Palestine) on economic and social levels will be needed and to do that greater democracy is needed as well as intermingling their economies to make war not only an issue or human rights but an economic issue what will backfire on the government starting the war.