I think someone is trying to hack me, what can I do?

I clicked on a link that I now know was probably a virus link. It sent me to a page to log into facebook, I did not log in. Then I got pop-ups warning me I might have a virus, which took me a while to figure out how to get rid of them.

Now, I am getting 6 digit codes to my phone saying it is for instagram. I don’t have an instagram account that I remember. Maybe someone can check for me?

I went into facebook to change my password.

Is the virus maybe trying to get all of my passwords for everything not just facebook and instagram?

What should I do?