When im using facebook @ my galaxy j1 the ram is loosing .. my phone is slowing .. the ram is 20 mb below .. when im using my phone get slowed .. what can i do to increase the ram

I have a problem in my galaxy j1 that the game is opening for sometime and shuts suddenly can't play any game in my j1 what can i do for this?

Can't find any way that is stable. I suggest disabling animation, limit the use of live wallpapers, and disable applications.

There's this app that I use when my phone starts to run slow, it's Force-Stop It! (link)
Your phone needs to be rooted for that to work.

How to increased sumsung galaxy j1 ram