Hey @Flutterbug9
I certainly struggle with noise-induced sensory overload, and I've had a lot of success with the Loop Engage earplugs, which let me have conversations without hearing everything else in the background (it's really helpful when I'm out shopping or using public transport).
Although they are quite expensive, which is why I didn't buy them for so long. I did buy it as a set that came with a carry case, different ear tips to help you find the right size, and inserts that lower noise levels even more. I was also worried about possible physical sensory issues from having them in my ears, but they're actually quite comfy and not annoying, personally (I sometimes forget I have them in haha).
I think you can buy similar, cheaper ones online, though I cannot comment on their quality, as I have not tried them.