Syria was doing its own terrible tyranny until pretty recently so Israel previously felt like the country could do its own internal unmitigated violence, and now its trying to trend towards something at least slightly better and they believe an improving Syria is a potential future threat. Turkiye is further away than either Syria or Lebanon, so they need to produce a better “excuse” to start shit there, but attacking Iran with little retaliation has them thinking they can shoot their missile-shots there soon as part of their attempts at broadly-regional dominance.