The Xiaomi Redmi Note 8 is a mid-range smartphone by Xiaomi released October 2019. It has a 6.3" IPS LCD display, a 48 MP main camera, a rear-mounted fingerprint sensor, a 4000 mAh battery, and runs on a Snapdragon 665.
Deleting unused apps may help, but I would start by disabling background usage for apps or restarting the phone. You can also check for any software updates that may be available for the phone and see if that resolves the issue.
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