Is every death at the hands of Israel against someone who is terrorist or has "terrorist-aligned ideologies"? If not, is every unjustified death of a civilian just "one IDF soldier doing something bad"?

You are handwaving away any sort of accountability from Israel. It is impossible, given your framing, for Israel to ever do anything wrong.

Last I checked, International Court of Justice and International Criminal Court tend to disagree.

To say nothing about overuse/abuse of the term 'terrorist' and weasel words 'terrorist aligned ideologies'.

To say nothing about being randomly in the vicinity of a person Israel might consider terrorist might put you in mortal danger, simply because they do not care about 'collateral damage'.

To say nothing about being Palestinian child being a 'future terrorist'.

To say nothing about trying to document what they are doing might put you in mortal danger (just look up the number of journalists killed by Israel).

https://en.wikipedia.org/wiki/Gaza_Strip_famine