Try this:
1) Go to the Windows 11 Desktop Icon Settings and untick Recycle Bin. This will remove the Recycle Bin from your Desktop.
2) Now go to the Desktop Folder and right click the Recycle Bin and choose Pin to Start.
If you have "Synchronize pinned items from the OS menu with Start11" turned on, skip steps 3 and 4.
3) Next go to C:\Users\"your User Name"\AppData\Roaming\Microsoft\Windows\Start Menu\Programs
4) Now Right Click the Recycle Bin Shortcut and choose Pin to Start11
You should now have the Recycle Bin on Your Start11 Start Menu.