Just wave. Get the fully exaggerated wrist motion, sides to-do d's and keep all the fingers up and spread out! 😀

Maybe. First I thought I'd like to be able to "apology beep" once in a while. But, on reflection, it might be just as annoying as the

"I'm not actually sorry and I know you're not really going to do anything tangible about my stupidity but for some reason I'm going to wave at you as though you've intentionally done me a favor by not running me over"

wave that too many jackasses indulge in. 🤔