As long as I've been alive, the only thing I know about the Palestinians is that they use violence to achieve their means. That's enough for me not to support them.

Violence during uprisings is often targeted at military structures and is generally not classified as terrorism under international law or ethics. This is obviously not a case in the discussed topic.

Blanket condemnation oversimplifies a complex issue.

And Israel don't use violence..?

It's not Palestinians who do. It's the major human rights organisations: Amnesty International, Human Rights Watch, and in Israel, B'Tselem:

https://www.hrw.org/report/2021/04/27/threshold-crossed/isra...

https://www.amnesty.org/en/latest/campaigns/2022/02/israels-...

https://www.btselem.org/topic/apartheid

But I am afraid this will fail to convince you. With Israel, I am often reminded of that old joke about the car driver claiming that everyone on the motorway is driving the wrong way.