There are horrific acts on both sides going back very very far. I grew up in a country with a relatively balanced media reporting on the issue and have tried my best to stay informed. Suicide bombings, bus hijackings, mass murders.

The inequality in force applied has still been a constant.

Also, the fact is that any peace deal has been made impossible by the hunting down and killing of anyone that could actually hold that conversation. All secular and left wing movements in Palestine have been eradicated in favor of Hamas, Islamic Jihad et al.

Likewise the Israeli extreme right wing now in power killed their own prime minister for trying to negotiate.

Also see the birth of Hezbollah as a response to Israeli invasion of Lebanon, which also gave rise to suicide bombings. These then spread across the region. The reason Israel invaded was to fight the Palestinians there who were displaced by the founding of the Israeli state and the following conflicts.

Edit: the Palestinian groups there were doing raids in northern Israel and fleeing back across the border to Lebanon

It's a gordian knot at this point and i am very doubtful there will ever be a peaceful solution.