You can download data by selecting a rectangular bounding box, or by using an Overpass query to download only the specific objects you want. After you have the objects you need, you can export the layer as GeoJSON. If you can specify what you want, I might be able to help with the Overpass. If we’re talking about massive amounts of data or the entirety of OSM Israel Data, this is not a good approach and a pbf may be better.