translation: Chrome-based browser
You could have opened the Downloads folder straight from the browser, which would launch the default File Manager (in this case, “Samsung MyFiles”.)
- Point your browser to https://f-droid.org/
- Click the blue button that says “DOWNLOAD F-DROID”
- Open the F-Droid.apk file as described here:
No idea what this means and would like to see screenshots.
–I think you mean: “I ran a virus scan because I saw popup advertisements”. You possibly did install malware from some place (or some garbage browser extension in Firefox) but it seems completely unrelated to the F-Droid web site and the application.
But simply using a computer does not guarantee better security; there are many variables.
If you are that concerned about security the obvious follow-up question is whether your copy of Android is a Google-free one.
Precisely. “My Files” is the native file manager on Samsung phones; various others have been discussed in this forum and you can set the default to be whatever you want.