I struggle with a lot of sounds, having a sensory processing disorder, the list of which is far too long to write out here. So I totally understand the frustration and how rage inducing it is, you are definitely not alone. Especially when people don’t understand it’s not a patience issue, it’s a ‘my brain isn’t wired the same way as yours and it genuinely cannot be fixed’ issue.

Other people have mentioned therapy, which is definitely a good idea. They can help you find ways to channel the energy into something else, or help you find the root cause (if it’s a children-specific thing, and not just a general sensory issue), or teach you good cognitive behavioral therapy practices.

In the interim, since finding a good therapist for you can take a lot of time, I would definitely recommend some form of earplugs. Mine have saved me and my sanity so so so many times. If I can recommend a particular pair, I would suggest the Loop Switch, since they let you adjust the sound reduction levels on the fly - but any brand / even the foam tip ones (as long as they fit you properly!) can help immeasurably. For me, just knowing I have earplugs with me helps dealing with these sounds, even if I don’t wind up using them, just knowing the option is there. Some form of stress ball or those grip / forearm strengtheners might also be of use for you? It can be a good distraction, as well as allowing yourself to let off some of the steam in a relatively healthy and inconspicuous manner.

And kudos for knowing this is a problem for you, and looking for help on how to improve it. I hope you’re able to make progress you want, one way or another. Good luck, OP - we’re rooting for you