Because that's the promise of God and fullfillment of the prophecy in Quran and in Torah.
Even jews know that their country which they stole from palestinians won't continue (and that's what many jewish Rabbis/scholars said)
Muslims also know that this wouldn't continue and we will win at the end.
It's just a matter of time.
And guess what?
Prophet Muhammad (peace be upon him) prophecized that killing would increase in the world as a sign of the last Hour.... And most of what's happening in the world today, prophet Muhammad (peace be upon him) prophecized it and this is a sign of His prophethood.
But this is a good thing that jews gather together in one place and when Muslims return to God sincerely and unite together, they will defeate them at the end....
In fact, Muslims are not worried at all about that..... In contatry, We are awaiting for the fullfillment of the Scripture 👌
Allah says in Quran :
And We conveyed to the Children of Israel in the Scripture that, "You will surely cause corruption on the earth twice, and you will surely reach [a degree of] great haughtiness.
So when the [time of] promise came for the first of them, We sent against you servants of Ours - those of great military might, and they probed [even] into the homes, and it was a promise fulfilled.
Then We gave back to you a return victory over them. And We reinforced you with wealth and sons and made you more numerous in manpower
[And said], "If you do good, you do good for yourselves; and if you do evil, [you do it] to yourselves." Then when the final promise came, [We sent your enemies] to sadden your faces and to enter the temple in Jerusalem (AL-Aqsa mosque) , as they entered it the first time, and to destroy what they had taken over with [total] destruction.
(Quran 17 :4-7)