Facebook app shuts down?

I'm using the Facebook app on an iPhone 6 with iOS 10.2.1. In the past few weeks the app keeps shutting down as I roll through the news feed.
I tried to solve the issue by 1. Hard resetting the IPhone. 2. Reinstalling the Facebook app.
Yet the problem still exists.

Looking for a good game app on iPhone

Preferably a sport (football, mma, boxing, wrestling) kind of game I can level up and become better with time. To grow and to build… Any game I can level up and build

How can I unlock my iPhone?

I got an iPhone from my sister but I can't log into my iCloud because the previous owner still has his logged in. I can't sign out in any way and I'm afraid that if I reset the phone completely, it will still ask for his iCloud.

Why can't i receive text messages from iphone users?

So i used an iphone before switching over to the galaxy s8. For some reason, i can't receive text messages from people who use an iphone. I still have the iphone i previously used and it gets all the imessages from people but it just doesn't go directly to my galaxy s8. Is there something i have to do to fix this? Do i have to wipe the sim card on the iphone in order to get iphone users texts?

Will I lose everything if I put a new Apple ID on my phone?

So I've been using my parents' Apple ID for years now and I'd like my own. All my music, apps, etc. Are connected to my parents' account. To be honest I'm not too worried about my music; I mostly use Spotify anyway & I can just buy new stuff.
What I'm worried about (this is pathetic lol) is my Sims Freeplay game. I've been playing this game for ages now and to lose my progress would honestly be kind of devastating.
However, I really want my own Apple ID. If I were to make a new one and use that on my iPhone, would I lose my progress on the Sims Freeplay game? If I connected it to a Game Center (I currently don't have the Game Center) would it delete everything or would it save everything?