Yes Gaza is ruled by Hamas which is a terrorist islamist un-democratic organization which can’t provide for its people, leading to foreign aid organizations providing most of the amenities there. A source for that will come later. The west bank is ruled by the Palestinian authority which is a functional state which has been mostly peaceful for the last few decades and which I support. The Palestinian authority is on paper supposed to rule Gaza too however Hamas declared war against the Palestinian authority in 2007 because they opposed the results of a democratic election and took over the Gaza strip. You can read about that here: https://en.wikipedia.org/wiki/Battle_of_Gaza_(2007)

Music festival celebrating “friends, love and infinite freedom” right by the border fence. Hamas killed 260 of the attendees on the first date of the war. Washington post source: https://www.washingtonpost.com/world/2023/10/08/israel-festival-attack-gaza-militants/

“Hamas’ traditional weapon is the Qassam rocket, a cheap garage-built weapon assembled from industrial piping, home-made rocket fuel of sugar and potassium nitrate fertilizer, and commercial explosive” Forbes soruce: https://www.forbes.com/sites/davidhambling/2023/10/09/how-hamas-leveraged-cheap-rockets-and-small-drones-to-ambush-israel/

This sources does say it’s made from fertilizer but this does not say explicitly that the fertilizer is from foreign aid (I found sources but they are all isreali). However if it is or is not does not matter as much as the fact that fertilizer should have been used to produce food for the starving people in Gaza. Hamas, the rulers of Gaza, can’t provide for most basic amenities for their people. Foreign aid powers a lot of basics such as schools and healthcare (which is great!) while Hamas uses their budget to bomb isreal. (If you want to read an American-jewish pro-isreal source about the accusation it’s here: https://jewishjournal.com/israel/336609/made-in-gaza-hamas-rockets-the-product-of-foreign-aid-and-smuggled-material/)

https://apnews.com/article/business-middle-east-israel-foreign-aid-gaza-strip-611b2b90c3a211f21185d59f4fae6a90

This article talks a bit about the foreign aid which goes to Gaza. Thankfully most foreign aid is now earmarked for certain projects (which is why the UN runs their own schools for example, so they know where the money is going)). Isreal has called for this for a long time because they were concerned foreign aid is used to fund terrorism. In addition isreal grants work permits to tens of thousands Gazans to work in isreal across the border. On the other hand it’s not possible to enter Gaza as an Isreali. I think it’s clear that isreal is the party with the most good will in this conflict. It’s also worth mentioning that some arab nations does not support Hamas either. Egypt for example is on the side of the Palestinian authority and has had a blockade against Hamas ever since the take over in 2007.