What is going on with my iPhone?

My iPhone 7 keeps doing weird things it keeps glitching and going in and out of pages it won't let me click on certain letters on my key bored doe times or certain things sometimes the left side of my phone won't work it goesor clicks on stuff by it self and it types random stuff by it self it just does really weird things what should I do? I had this before on another device now it doesn't work anymore

Hulu not displaying subtitles?

I'm on my iPhone 8 and I have the app and it recently isn't working when I watch anime that clearly have them bc I've watched them on my tv and it's called the sub version. When I go to the gear icon I can't even toggle the subtitles on or off it doesn't allow me to click it but it does say it's on anyway, so I tried the iPhone accessibility settings and created my own subtitle settings that it asks me to but its still not displaying. I've tried logging on and off and updated my phone but nothing works, how do I get my subtitles back

My mom is on her ipad all the time, and when I come in the family room and talk to her, she doesn't respond to me. Is this normal?

She s either working on it or watching youtube videos, usually with the ipad a few inches from her face. I say something to her, 3 sentences, and she will know I said something, but doesn't compute what I'm saying and won't respond. It's like I'm not even there. I feel this is really rude, and uncaring. Is this normal for people to behave like this? It's every day, all day, all the time. I know we re all glued to our ipads and iphones now but still? I feel there's a code of ethics and respect despite this.

I start to shake inside when I stand up & walk but when I lay down it subsided but I can still feel it slightly in me. I'm 18 super scared?

I been feeling weak my period is due in 13 days I also have all the symptoms of lupus like many… Lymph nodes, sensitive to light, joint aches, shortness of breath, confused, off balance, dizzy, petechiae, rashes at times like on my chest or stomach, very tired all the time at times it subsideds, anxiety, etc., it comes in episodes all this. I have no family history of lupus I spoke to a family member that's gifted she feels no illness for me but deficiency but she still told me to go to the doctors. I been taking smarty pants adult vitamins for 2 or more weeks and for a week I been take magnesium. I been laying down a lot because I can't stand up for long or I get to feel very faint also I'm on my iphone 24/7 my sleep pattern is very off. I get very sick feeling mainly 2 weeks before my period like I'll get my period is feel sick until my next one comes… When that one comes then I feel slightly better

Simple calendar app?

So I'm looking for a very simple calendar app. I do NOT want it to be synced to any of my previous calendars on my iphone. I would like to mark each day I attend class. I simply want to put a "mark" on certain days without there being "marks" on planned holidays and other events. I want it to be strictly marks made by me. I have not found a simple calendar app that allows me to do this. They all want me to sync the app with the default calendar. I do not understand why such a simple task can't be achieved.