You obviously don't know what you're talking about. Anyway, just survey the news articles from Syria of Syrian claims that it shot down Israeli fighters, a lot. Any truth in these claims? None! No wreckage, none! Almost everytime Israel bomb targets inside Syria Syrian propaganda will immediately claim it shot down Istaeli planes in the process!
You see in propaganda you must inject some modicum of truth in your claims. Now, Syria will always claim that it has shot down Israeli planes then the least they could do is show us some wreckage every now and then. But no wreckage all this time, not even bits of panel from downed Israeli planes? Man, that's so clumsy from Syrian propaganda!
Maybe you can relay my advice to them: if there are no wreckage since obviously they have not yet shot down any Israeli plane then at least fabricate some! There a lot of old Surian planes, they can paint them first like Usraeli fighters and tgen blow them up! Then post pieces of small parts from the blown up pieces! Then just claim that the pilot was rescued before Syrian forces reached tge crash site!