Stop Closing Apps on Your iPhone
Did you know that closing apps on your iPhone does more harm than good in the long run? Each time you switch from one app on your iPhone to the next that app enters an unresponsive state. When relaunching an app from the closed state it is using more of your battery life each time. Read the article linked below for other reasons why to you should stop closing apps on your iPhone.
https://www.howtogeek.com/773871/stop-closing-apps-on-your-iphone/