They literally are not. What you're missing is that shooting someone in combat scenarios is not "killing members of the group/causing serious bodily/mental harm to members of the group" as genocide is defined. Murdering them wholesale is. Intentionally starving them, as with the Holodomor, is.
None of the rest is even arguably happening at all. There is no way to construe their relationship as genocidal.
The reason why is right there in the opening: with intent to destroy, in whole or in part, a national, ethnical, racial or religious group
Are Israel's policies discriminatory? Yes. Oppressive? Hell yes. Poorly conceived, authoritarian bullshit? I'm right there with you. Genocide? No.
Things can be wrong and need changing without being literally the worst thing.