The situation was very unfair and I was treated as if I didn't matter after working there for over 5 years
Wow im sorry to hear that. It sucks when something goes wrong at a job you've been there long
I know.  I worked my tail off for that company.  After I was fired they called me a week later to tell me they realized it wasn't my fault but I had already found a new job and told them to take a hike.
I'm glad you found a job quick! That must have felt a little good to tell them at least