Hi @Anjana R ,
According to the article you provided, Adobe Acrobat for Microsoft 365 seems to be a great solution to update PDF files in browser.
As IE is not supported, now we could view SharePoint files with File Explorer in Microsoft Edge. You could open PDF files in file explorer as a workaround if you have Adobe DC and PDF files are set to open with Adobe DC.
For Reference: View SharePoint files with File Explorer in Microsoft Edge
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