Microsoft is introducing Gallery, a new feature in File Explorer with Windows 11 version 22H2, designed to make it easy to access your photo collection. The content in Gallery is the same as what you see in the All Photos view in the Photos app on your pc. if you are facing problems with this app missing on your system than here its the fixing method today .
Add Gallery APP to navigation panel in File Explorer
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Classes\CLSID\{e88865ea-0e1c-4e20-9aa6-edcd0212c87c}]
"System.IsPinnedToNameSpaceTree"=dword:00000001
Download Registry
Delete Gallery APP to navigation panel in File Explorer
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Classes\CLSID\{e88865ea-0e1c-4e20-9aa6-edcd0212c87c}]
"System.IsPinnedToNameSpaceTree"=dword:00000000
Save the .reg file to your desktop.
Double click/tap on the downloaded .reg file to merge it.
When prompted, click/tap on Run, Yes (UAC), Yes, and OK to approve the merge.
If File Explorer is currently open, then close and reopen File Explorer to apply.
You can now delete the downloaded .reg file if you like.