A few issues:

- "The democratically elected government of Gaza-Palestine is the Hamas" Hamas is not a democratic government, period. Elections you're talking about were almost 20 years ago. It's like calling Trumpistan 20 years from now a democracy, if Trump today declares he'll live forever, and that there will be no more elections, and enough MAGA Americans help him persevering.

- Israel's struggle is the Zionist dream of creating a Jewish state by any means. Means have been pretty violent and treacherous, from international terrorism, assassinations of diplomats, to mass killings and violent displacement of 100s of thousands of indigenous people, unilateral declaration of statehood over someone else's land, etc. Indigenous people have been revolting against this since way before Hamas even existed. It's quite something to bothside this, or even invert this, and call indigenous people terrorists, while violent immigrant invaders and land thieves are somehow legitimate state.

- Martyr != terrorist, it's anyone killed in some manner in relation to the above political context. If a child is shot in the head by Israel's soldiers, it will be called a martyr. Executed ICRC workers were called martyrs, etc.

The Hamas government isn't democratic, but it was democratically elected. And voters knew whom they were voting for, Hamas didn't change, they were a terrorist organization back then as well. Voters democratically elect all kinds of dictatorships. Still their fault.

Indigenous people (legitimately imho) started a war over that territory and lost it. Started a few more and lost those as well, together with some neighboring states. If you lost the war for that land, it isn't your land anymore. Simple as that. And terrorism isn't an acceptable means of warfare.