How may I add IMDB search to Firefox?

@Jon​ Recently, Firefox went rogue and messed up my tabs, as well as some of the add-ons.  I had one that I cannot find now, that allowed me to type an actor or a movie in the search area, then I was able to drop it down and it looked it up in IMDB.  I am trying to get that to happen again.  Any assistance would be greatly appreciated.

Hello @a_m_5160737​, 

In this case we recommend you to reach out Firefox for further support or assistance.

You may find this link helpful: https://support.mozilla.org/en-US/kb/add-or-remove-search-engine-firefox#w_add-search-engines