What can Firefox and uBlock do to stop Google from blocking adblock users on the site

Not sure if you question is serious … but just in case, Mozilla is one of the few non-profit orgs that is fighting for an open web

ref. https://www.mozilla.org/en-US/about/manifesto/

and uBlock Origin can literally work its magic because firefox provides the necessary APIs that allows it to work. (old ref. but AFAIK still relevant: https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox)