How to Fix Gallery not Showing Images on Android
Step 1. Download the both ES File Explorer and Media Rescan on your devcie.
Step 2. Once you have installed ES File Explorer on your device, Open it and search for .nomedia.
Step 3. You’ll get a list of .nomedia files, delete all the files named as .nomedia.
Step 4. Now open Media rescan app-> Tick All media->Tap Start Media Scan.
Step 5. Once the process is finished, Open gallery and all of your photos and videos will be in your gallery.