What could be going on with my iPhone?

Please help! I don't know what is wrong with my iphone! For the past week or so everything has been acting up… Email will open and crash constantly. Apps like youtube and tinder will also crash. Web pages will not load. Photos will not open. Instagram will not take photos or allow me access to the camera or camera roll. What in the world could be causing this?! I'm worried about my phone dying for good! Please help me!

Added (1). i'm going to try and take it to apple soon but have no money to get anything fixed so…

Added (2). Important! Going out on a limb here but my cousin got me one of those wireless charging station things for the holiday and all of this started shortly after i started using it… Is there any way that the charger could be the cause?

How to save storage on my iphone without deleting any of my pictures?

I have alot of pictures I admit, but they're pictures that I don't want to delete because they're memories of alot of stuff. But now I can't film anything, take any pictures, or export videos to my gallery because I don't have any space Is there a way where I can clear up some space while not having to delete anything?

Why are my iPhone videos so huge now?

IPhone question… I used to be able to email videos (up to a minute or so) from my phone at like 5MB… But now they are like 60MB+. Does anyone else have this same problem… Or know how to fix it? I'm so bummed, I can't email videos to myself to save to my computer in a manageable size! (oh, same deal with Wilson's phone too). Any help or thoughts would be most appreciated!

How to make the battery percentage show?

I have a iPod Touch 5th Generation and I have a iPhone 4S. How do I make the battery percentage show on my iPod? On my iPhone I had one of my friends do it for me earlier last year. Please tell me how to make the battery percentage show on a iPod Touch 5th Generation