Explorer.exe and other system files gets blocked

Hi I am a new Bitdefender use, I just installed Bitdefender and it detected explorer.exe as a malware and it stopped it. Also a Powershell command that I am not sure if safe or not got stopped and a file named BrowserApp got moved to quarantine which lead to Windows ****** Host to keep popping a message "Can not find ****** File BrowserApp.vbs" I am using OperaGX incase it have something related. I searched online for the command found its safe but still dont know and didnt find a thing about the BrowserApp file. Please help I don't know what to do

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