You don’t need to be a specialist. UN agencies, Amnesty, Human Rights Watch, the ICC, and Médecins Sans Frontières have all documented Israel targeting civilians and committing war crimes. That’s the evidence; you don’t need insider expertise to read it.
Oh, and these are well-established, independent international organisations with decades of experience documenting human rights violations worldwide, not “Hamas supporters.” Their reports are based on field investigations, witness testimony, and satellite imagery, not ideology.