idk if it actually IS on battery saving mode but I noticed my Infinix smart 6 is always killing/closing my apps in the background whenever I move to another app for a minute (i.e closing YouTube to respond to an Instagram message but when I open YouTube, the app has restarted and the video is gone. annoying.) not only is it annoying but I hate how the apps restarting takes a lot of time away from doing actual work or something. I've tried a lot of tips on how to fix this problem and it's still happening, does anyone know what's wrong with my phone?

Also my phone's screen brightness changes automatically but adaptive brightness is off wtf????