People are definitely dying and that includes civilians, but facts matter and a lot of these numbers are simply made up by Hamas. Here's some analysis that demonstrates that it's extremely unlikely Hamas's Gaza Health Ministry numbers are based in reality: https://www.tabletmag.com/sections/news/articles/how-gaza-he...
Stuff like almost perfectly linear growth of deaths over days and so on, take a look at the article.
This is also Hamas who claims that every person killed was a civilian. Try to find "number of Hamas combatants killed" in the Gaza Health Ministry numbers, they don't even count this. Isn't that a bit weird? Israel will tell you how many people killed were armed soldiers and how many were civilians, as most places will do.
I don't know why people believe the numbers coming from Hamas. I wish there were a more reliable source in the area, but believing Hamas because you have no other numbers to go on is plain stupid.