How do I keep an App running in Background without rooting?

Question

Mobile Legends in my phone(Xiaomi Redmi 5a) always restarts whenever I went to recent apps. And it is irritable when I'm in-game. What would normally cause this? How do I prevent it from happening?



P.S. I saw the post same with this and read the answer. But I don't want to root just for this.


— TerribleDog | Sources

Answer

I have the same phone.



Go to Settings > Battery and Performance > Choose Apps > Click Mobile Legends > Set to No Restrictions.


— HEWhoDoesn'tKnow | Sources

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