Do you have a big phone and small hands? Here's an easy way to peak at your notifications bar without even touching your screen! This trick works with Android 8.0 (maybe even lower) and phones with a fingerprint sensor in the back.
Go to Settings -> tap on Systems option -> tap Gestures option -> tap "swipe fingerprint for notifications" -> toggle it on
To use this feature, use the fingerprint sensor to awaken your phone, then swipe down with your finger to pull down the notification bar. Fast and easy!