Real or Fake iPhone becuz this is compromised!

So, every problem I have with this iPhone, which hasn’t stopped since the day I bought it “pre-owned” I repeatedly am told iPhone cannot be hacked, which leads me to believe I purchased a Fake iPhone. This is just what’s happened this week: The theme is in general POP UP WINDOWS (sometimes from) APPLE 1) There was a POP UP WINDOW in the phone for a Package Delivery, when I opened to see what that was for.. I got a POP UP WINDOW from APPLE that I need to put my card numbers in to receive the package (I never ordered) ....& I see my settings again are changed 2) Apple Cash was turned back on when I turned that off again 3) I got a POP UP WINDOW from APPLE that the money in my account (I have none) will go to the other devices connected to my AppleID 4)Constant POP UP WINDOWS “Cannot Connect to Server”. 5) I went to Apple Contact and input my complaint. When I did that I received a POP UP WINDOW from APPLE to “Please enter a valid email” rather than “Please enter a valid AppleID”!!! (which was OBVIOUSLY not Apple. Right? 6) then today.. again for the 15th time this week oddly, I received a general Phone POP UP WINDOW that said “UNDO TYPING” as I only saw this twice before when I 1st got the phone.. & then shut that off.. I checked & it was on again! 7) just now another (you guessed it) POP UP WINDOW came up for UNDO TYPING it was ON AGAIN! & this time 8) I also discovered something new 2 things called recipes?? One for tapping the middle of the screen & one for swiping left! I screenshot almost all of these & remembered when I saw the screenshot 9) the other day I had 2 IP ADRESSES in General Settings/ “about phone” OH! & also 10) DO NOT DISTURB would not work with the SAME NUMBERS REPEATEDLY coming thru so.. 11) when I left the request to get a return call from APPLE .. I did not get it yesterday 12) when I used Find My iPhone today.. it shows 2 locations! & there are many many more. It’s every day.. every other day at the least.

So, you can say iPhone cannot be hacked but please then tell me HOW TO CHECK IF MY iPhone IS FAKE!