I have a Samsung Galaxy S20FE5G and use the Firefox browser with Google search. While browsing on Firefox, I clicked on a website in my search and a flashing pop up appeared saying the phone has been infected with a virus and to "click here." Obviously I did not click on the pop up since I suspected this was a scam for infection in itself. So I immediately closed all windows/tabs and then turned off my phone. I restarted my phone in safe mode and made sure all the apps were those factory installed or those I installed. I turned it on again to run a scan as suggested by Samsung but found out that the installed Samsung "Device Care" did NOT have a scan function for viruses. I checked Firefox to see if there was a message or warning and saw none. Then I turned my phone off again. 3 BIG Questions: 1. What should I do? 2. Should I be concerned? 3. Should I change all my passwords? If so, then the problem is I need to use my phone for 2 factor ID and I would need to turn it on again in normal mode. (FYI I used the guide in this article: '''https://www.samsung.com/uk/support/mobile-devices/how-do-i-use-the-smart-manager-application-to-check-for-malware-or-viruses/ to determine the steps I took so far. )