System Storage how to reduce it?

My system storage is up to 44GB, I’ve turned off my phone and deleted some apps, messages, safari history and my phone system is updated, however it’s changed, what can I do next to reduce it?

Honestly I would say just backup, wipe and restore. My 64GB 8 was showing almost half the storage taken up by iOS (on the bar graphic; only ~8 at the bottom of the list) and ~18GB on system data. I searched for solutions but nothing worked. I was so reluctant to try the 'nuclear option' but it's easy and effective. Now down to 13GB total used and everything else is just as it was. Didn't even need to re-log into my apps. Good luck!

System Storage how to reduce it?
 
 
Q