1) Israel does not arbitrarily kill people. The ratio of dead combatants to dead civilians is roughly 1:2, which is better than the US or other Western powers achieved in Iraq and Afghanistan. It's obviously also significantly better than Russia achieved in Mariupol alone (75k dead civilians, about 5k dead combatants).
2) I repeat: The IDF, Netanyahu, and other leaders have said a zillion times that the goals are to neuter Hamas, bring back the hostages, and provide a Hamas-free future for Gaza. These goals are consistent with their actions, which include dropping leaflets, sending text messages, doing roof-knock warnings, establishing humanitarian corridors, safe zones, allowing in aid, and more.
3) Yes, I have many Palestinian friends, and while I would never march with the current #freepalestine movement, which I think is highly antisemitic, I did march with the movement for years. Most of my Palestinian friends are afraid to speak up for fear of career damage. I encourage them to speak up and tell their side! I can guarantee you I've donated more to Palestinian causes than you or almost anyone on the thread has.
4) Do you think when Israel goes into a West Bank town they just do so for fun or malice? I mean, seriously! What a weird conception of the world. They go in and risk their soldiers to get terrorists, of which there are many.
5) I encourage you to browse Israeli media and hit the translate button! Based on your limited knowledge, I would guess you're not doing this at present. If you were, you would never claim Israel's goals are to make Gaza unlivable.
6) Yes, there are bad apples in the Israeli military who destroy stores and worse, but that is illegal in Israel and those soldiers get punished and face the military justice system. The same thing happens in every war, including US wars. Remember Abu Ghraib? That was far worse.