You, should read why the two sons of Hamas left Hamas. The first became a Shin Bet Agent, and the other defected recently:
https://www.timesofisrael.com/second-son-of-hamas-leaves-terror-group-exposing-corruption-turkish-spy-ring/?fbclid=IwAR2Es5v8U_ah6jxDasMhosn_eCGNCuDspEKzYd4xXye6lY-ihdWGQRc_7uI