Why can't I open my PDF files?

Why a PDF won't open on Adobe Acrobat

Your laptop doesn't have a PDF reader installed. Your PDF reader or preferred program is out of date and needs an update. Your PDF application is potentially damaged or needs to be rebooted. The PDF is potentially damaged or tampered with.
Source : https://www.adobe.com/acrobat/hub/why-pdfs-will-not-open.html

Where do I find the download manager on my phone?

How To Find Android Downloads - YouTube

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Source : https://www.youtube.com/watch?v=STNvnM5r6JI

How do I get my Downloads to open?

4 Ways to Open Downloads - wikiHow

Click the Start menu and then click your user name. You should see a Downloads folder in the window that opens. Open Windows Explorer ⊞ Win + E . Your Downloads folder may be listed in the left frame under "Favorites" or "Computer/This PC".
Source : https://www.wikihow.com/Open-Downloads

How do I download my files from Google?

How to Download Files From Google Drive (Computer, Android, iOS)

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Source : https://www.youtube.com/watch?v=lCNwv0XWC8I

How do I force Chrome to open a PDF in Adobe?

Open PDFs in Acrobat Reader from Chrome - Adobe Support

Using “Open in Acrobat Reader” option for PDFs opened in Chrome browser. When you open a PDF in Chrome, you see the Adobe Acrobat prompt in the upper-right corner of the window. Click Open in Acrobat Reader.May 23, 2023
Source : https://helpx.adobe.com/acrobat/kb/open-in-acrobat-reader-from-chrome.html

How do I open a PDF file in Google Docs?

How to edit a PDF in Google Drive using Google Docs | Adobe Acrobat

Locate your PDF within Google Drive, then right-click and select Open With > Google Docs. Edit your document. Once your file opens in Google Docs, you can now start to make edits.
Source : https://www.adobe.com/acrobat/hub/edit-a-pdf-in-google-drive.html