iPhone storage full and nothing works
Hello, I am having a major problem. Sometimes when my iPhone 6s storage is close to full, it starts acting weird, you know, shutting down randomly, closing out of apps unexpectedly etc. Usually I fix this by deleting some apps and photos to free up space. This time, however, my phone has gone into a coma. In my settings it says that all 16 GB are full and the system itself is using 10 GB. I tried to free up some space on my iCloud by turning off iCloud backup on some of my apps, and then all of the apps on my phone went on to iCloud and I can no longer access them. I cannot use my calendar, reminders, contacts, mail, notes, weather, music, etc. My phone is completely useless. Every one of those apps has the little cloud next to them and when I click on them nothing happens. My alarm didn't even go off this morning. I deleted 5 different apps and the storage said it was fuller than it was before. I tried to delete some photos, but it would not let me. The photo would disappear for a second and the reappear. I tried connecting my phone to my MacBook to download some photos on to my computer and it would not connect. When I go into settings to try and delete large attachments to text messages, settings just quits unexpectedly. My phone will also not connect to Wi-Fi for more than 5 seconds and the battery seems to be draining very quickly even thought I am not using it. I have no idea what to do, and since my phone is a few years old I apparently no longer have complimentary apple support. Please send help, I really need to be able to use my phone and access my information! Thanks!!
[Re-Titled by Moderator]
iPhone 6s, iOS 11.2.2