Hi Norak. I'm Greg, an installation specialist, 10 year Windows MVP, and Volunteer Moderator here to help you.
I'd just create another desktop shortcut for any that disappear or malfunction as it's more effective and time saving than trying to repair them.
See here all ways to create desktop shortcuts in Windows 10:
https://www.howtogeek.com/436615/how-to-create-...
https://www.laptopmag.com/articles/make-desktop...
https://www.isunshare.com/windows-10/change-des...
I hope this helps. Feel free to ask back any questions and keep me posted. If you will wait to choose if I resolved your problem, I will keep working with you until it's resolved.
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