As a Eurovision fan, we should message our broadcaster responsible for Eurovision to ask them to get Israel boycotted from Eurovision

It probably won't do much, but then at least they know we do not approve of our countries performing in a contest together with an apartheid state. And who knows, maybe they do listen. In my mail to AVROTROS I highlighted that it's hypocritical to not boycot Israel after Russia, that Israel is committing genocide and that a lot of people will boycot Eurovision and AVROTROS if they don't boycot Israel.

You don't have to be a Eurovision fan yourself to message your broadcaster.

There's a list on wikipedia with participating countries with the responsible broadcaster next to them: