I'm going to have to reset my device I play MLs on. I have it connected to Google Play but I dont have a Facebook button on the game to connect my profile to it. Will I lose anything if I factory reset my device on the game?

You shouldn't do. As long as you are 100% sure you are connected to google play.
You should also take note of your support key. That way you can get help if things go wrong.

If possible before resetting I would suggest try accessing your game from a different device to ensure your game is saved. If you do not have a physical device you could try using one of the android emulators on a PC or MAC.

Will do. Thanks