Apps not removed from recent.

[AC Question]

Ok so I just got a new Lenovo Smartphone and it has android 7. So about a week or so later, the Chrome app was always there on the recent apps list. I swiped it, cleared the ram, restarted the device but nothing happened. It consumes a ton of data and battery but just doesn't close. Also yesterday, the same thing began happened to camera. So now I got two apps that just never close. Please help.