When I click on the sign in for Google, I am directed to a different site that I have bookmarked
When I go to login into my Google account, instead of the Google login, a login from another website I use pops up instead.
Wšykne wótegrona (1)
What web address are you using to get to Google? Or is this with any link?
What is the link of where you end up?
You may have ad/mal-ware. Further information can be found in this article; https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no
Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.