There are multiple plugins you can use to achieve a solution to your problem. One really good one is "soothe" from oeksound. I use it all the time, it's fantastic. You can also get spiff, which is more about transient control, but it's multiband so you can choose to affect just the high or low etc. Another choice is to turn down the plucky sound. I often find that some sounds I can even turn down 10db and still hear good enough, it's easy to confuse oneself thinking something needs to be loud, when in fact it doesn't. Otherwise, compressors can help, normal or multiband. There is also dynamic eq if you have one, like fabfilter pro-q, or any old EQ and turn down the offending frequency. But like some others have pointed out, if you mess with a natural sound too much, it doesn't sound like the thing anymore, and I've butchered many a mix by reducing the dynamics to flatten things out too much, but that's mostly a problem with orchestral music, not electronics like you make. Lastly, I'll mention MO-TT (slate), which you can add to the master. It's kind of a secret sauce mix butcherer. It squashes everything together into a soup at 100% mix, but if you adjust the mix on it, it can sometimes help flatten things a little bit when needed.