When some site doesn't work for any reason, I usually open them in different browsers one by one to see if it works. They act as fall backs. Also, I'm a web dev and I have to use Chrome just for its debugger because Firefox's debugger is slow and it hangs for some reason on our app.

> When some site doesn't work for any reason

When done site doesn’t work for some reason I go and use some other site. I’ve yet to encounter an essential chrome-only site.

> When done site doesn’t work for some reason I go and use some other site."

That may or may not be an option.