And your source for that figure is?
The only source I have seen for Hamas/Gaza casualties is Hamas. They are not a credible source.
Many references and summaries given here.
https://en.wikipedia.org/wiki/Casualties_of_the_Israel%E2%80%93Hamas_war
As of 22 January, over 26,000 people (25,105 Palestinian and 1,410 Israeli[8]) have been killed in the Israel–Hamas war, including 83 journalists (76 Palestinian, 4 Israeli and 3 Lebanese) and over 136 UNRWA aid workers.[9][10]