Thing is tanks hunt in packs so taking a shot at one means the others know where you are (plus the supporting artillery to “dust” the area if their own infantry gets pulled back).

I remember in basic shooting the LAW (light anti tank weapon) and everyone was excited.. until the drill sergeant with the infantry badge relayed the actual info about tank units (another Rambo fantasy died hard). Trained troops know this but most Russians are being increasingly used as barely trained fodder in human wave attacks ..