Hi. I used to think like you do about the Israel/Palestine situation, that is until I read the Palestine Papers. I read the diplomatic communications between the U.S., Palestinian, and Israeli officials trying to broker a peace for the region. What I found out was that not only did Palestine think Israel should not exist, Israel thought that Palestine should not exist, rejecting a proposed two-state solution.
en.wikipedia.org
The whole mess began when Israel was created after WWII. Historically, Israel has illegally expanded its borders, forcing Palestinians off their land. This is problematic.
An example, from my link below:
"The biggest change to Israel's frontiers came in 1967, when the conflict known as the Six Day War left Israel in occupation of the Sinai peninsula, the Gaza Strip, the West Bank, East Jerusalem and most of the Syrian Golan Heights - effectively tripling the size of territory under Israel's control. Israel effectively annexed East Jerusalem - claiming the whole of the city as its capital - and the Golan Heights. These moves were not recognised by the international community, until the US changed its official position on the matter under the Trump administration, becoming the first major power to do so. Overwhelmingly, international opinion continues to consider East Jerusalem and the Golan Heights as occupied territory."
Whole history of border expansion is here:
Israel's borders explained in maps
The more I looked into it, the more I saw wrongdoing on both sides: desperate people forced from their land resorting to terrorism; Israeli soldiers shooting Palestinian children for throwing rocks at them; virtual apartheid; the abysmal treatment of Gaza. No one is innocent here, except for dead civilians.
It is a mess with too much historical baggage to recount here, but after looking into it I can no longer take sides.
Lest this attempt at contextualization be misunderstood, I condemn all terrorist attacks, but the Israeli role in prompting them can't be ignored. I have no idea what the solution is.