My all problems were solved except the default user and msixbundle issue.
1. I want to set default user icon and name permanently that after Windows installation it show this icon & name I set already in windows customisation.
2. I added some .msixbundle like Microsoft store, snipping tool, camera, notepad, copilot etc to windows 11 ltsc version but after Windows installation it can't run shows this error (check the spelling of the name otherwise there might be a problem with your network error..... See attachment)
How to fix this issue that after Windows installation it all added msixbundle run without connect to Internet.