This shows that the Jews shouldn't deserve the land that God gave to them because they were being very aggressive and mean to many of the people who lived there, they can't deserve something like that since they hurt many.

Although they fully developed it, they did leave it. Unattended. It's common sense to not leave something that you spent a lot of effort just in the dust, so the Muslims got to take what they started and carry it forwards.

Although they did win all of the wars for their country, they shouldn't have betrayed God's laws by killing many people. If they got the land from God, shouldn't they be grateful and use it for good things?

Although they had the land first, they never said, "This is our land, do not take over it!" when they left. So, technically, once the Israelis left, it was the Muslims land, and you can't really just expect to have it back when they didn't clarify that it was theirs.

My question is when did the Jews be forced to leave Israel? And by whom?

(Both sides should have some) Palestinian communities are split apart nad their connection to the land had weakened, while Jewish communities put down roots in territory meant for the Palestinians

Saying that God gave them the land does not provide a good reason about what they will benefit to the land.

Although they have more, it doesn't mean that they should completely have it. The Muslims have holy sites there too that they would like to visit, not everything is a holy site for the Jews, there are many for the Muslims as well.

Although Palestine is a holy place for Jews, it is a holy place for Muslims as well. throughout the history, this land has been very important to the Muslim faith as well.

Just because the Jews settled and developed the land, doesn't mean that they should have it. They left the land for anyone else to have because they didn't claim it when leaving, showing that the Palestinians should have it.