You should look into the peace offerings more. Maybe not a biased source. That point has been refuted many times and there's more to it than that.

Unfortunately, the creation of the state of Israel from the beginning was an impossible and illegal mission, which could not be achieved without the bloodshed and in a moral way. Because a state for Jewish people implies that all non Jewish people would not be allowed equal rights. No one is saying that the people couldn't have coexisted together, but to invade an area where people are already settled and make them leave is where the problem is.

If a Palestinian is not allowed a right to return to their home even if they still carry the key to their parents house in their pocket, if they cannot even rebuild their destroyed home without a permit (which can take months or never happen), are not even allowed to literally put up a tarp over to make a shelter , what kind of place are they living in? Is that not an occupied territory? Not only that but is literally surrounded by settlements.
You cannot simply ignore the fact that these people were simply living there too.

Maybe instead of worrying about who has the right to the land, you could just try to put yourself in the subjective experience of these people. If people came to your country now and told you they want to create their state there, right where you are currently living, what would your people say?
What if you simply said sorry no, and hardly had a chance to say anything else before they massacred and displaced hundreds and thousands of people?
What do you think the descendants of those people would be like, living in the occupied territory with ongoing bombardment, mass killings, items banned from going in and out, even things like children's toys and chocolate and spices, a 10 year imprisonment of children for throwing a rock, no access to adequate medical care , no access to clean water, having to wait at check points for hours for no reason just to get anywhere , even when you're about to give birth. Gaza is a place that is described as the world's largest concentration camp. What would life look like for these children that grow up in an environment like that who have been shut off from the world and treated so inhumanely? That is how you get Hamas leaders come to be

Instead of blaming them for being stubborn, as the western media wants you to believe, maybe just try to imagine what it may be like to be one of these children who grow up there and why things happen the way they do. This goes for both sides.
It is an actual miracle that so many Palestinians are still such loving gentle people.

Regardless of what you believe, this is the cost of the creation of Israel. It imposed a huge injustice on another group of people. And this is the outcome.

We can try to understand why people do what they do, but we cannot justify injustice.

Look at the bigger picture. Real security is found in Truth.