How can I fix my Instagram and other apps without hard resetting or taking it to the apple store?

So earlier this month I updated my Iphone 6s plus to the new update that allows you to facetime with a multiple number of people. During the update, My Wi-Fi went down, and it took a lot of time until it finished, and when i started my social media apps, it would freeze and crash. Many other apps had similar effects and my other apps would process a lot slower. Is there another way that I can fix this without hard resetting or taking it to the apple store? Btw I had already tried to soft reset and it barely does anything

Is there a way two record two instruments into an iPhone?

I was planning on playing a duet with a friend where I'm on the guitar and they are on the violin and it's just something I want to post on Instagram, nothing special. Is there a cheap device or method that I can record both of us as we're playing directly into my phone?

I have a problem with my iPhone 8plus?

Since I bought it, the ITunes Store never worked. Every time I'm opening the app it says "Open ITunes U app" after pressing there it says "Can't connect to ITunes Store" I tried a lot of things, like changing the country, sending an e-mail to the apple support, but still nothing. Can someone help me, please?

I've got an iPhone that's damaged, it's insured but does the insurer have the right to send a replacement instead of repairing without asking?

I have a 24k good iPhone and it's damadged quite bad (internally). I want to send it to be repaired but am worried the insurer can send me a new phone (standard edition) and keep my limited edition one as it was custom gold plated. I live in the UK and don't know much on the laws around this. If they can't repair it am I allowed to ask for my damadged phone back rather than a replacement sent?

Should I get the iPhone X or XR?

I'm finally upgrading from my 6 and I'm getting a new phone at the Verizon store. I mostly care about the camera and that the phone will last long and the battery doesn't mess up quick.

A kid at school threatened to hurt me?

So I found a phone in the bathroom at school. I left it there in case someone was coming back cuz the find my iPhone app was ringing. I put somthing saying what I found on my Instagram story so people would maybe see and get it back. I got a threat from some kid saying they would hurt me if they found out the hard way. Now here is where it gets hard to analyze. I was told that the phone found belonged to let's pretend there name is Joe. So Joe or his brother texted me because the account had the same last name as Joe. It was either him or his brother since I had Joe blocked before this. By the way Joe is extremely jealous of me. I know this because he was rude to me before that and would tell people how I'm always showing off. He doesn't have that much and I don't mean to sound rude but I beleave he is being extremely rude to me because of the jealousy. I was wondering what I should do to stop this? Ignore the threat? Because he never even looks at me when he is alone so I highly think that he won't hurt me. Should I report Joe?