Uninstalling the app sounds like a drastic measure.
The first thing to do is to make sure that all the contacts you need are saved somewhere else to not lose them. It can be challenging to communicate with your friends if they are not all signed up for another app.
Secondly, a Facebook page is usually necessary for work because it is easier to coordinate. That's because everyone has a Facebook page.
And at the end of the day, I bet you have a lot of memories there, like photos. It would be a shame to lose them. For my part, I even bought
likes for every post. I wouldn't want the attachments to go to waste if you had them.