It’s not just urinals. The first day of the year with shorts at home always brings a surprise chilly mist on my shins from a regular toilet. It is what it is. You’re doing it as good as it gets. Either you’re experiencing the normal amount of spray or your stream makes extra spray. Either way, it is what it is, it sounds. All you can do is lean forward and spread your feet asuch as you can to avoid collecting the mist. Side wall is my go-to. Lipped walls are my enemy.