If you're using sidechaining a lot, I'd recommend giving something like LFOtool a look. I still use ducking sidechain (eg using kick to duck a bassline in dnb), but imo using something like LFOtool gives you WAY more precision. I find using a compressor set to s/c mode gives me a mushy, loose sidechain, whereas LFOtool is tight and precise. I have also used Kickstart which imo does not sound as tight as LFOtool.