put pics.

likely it's damaged and nees replacement.

I broke one this week too :(
 
Unfortunately it sounds like dm222 has given you the correct answer as currently he is very aware of how these things are put together!
 
Electric?
No manual. It moves a lot where the plastic meets the door
e036c9f44c0840025c03ceebfeea6b7c.jpg


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That's easy to fix. Fold the mirror and you'll see the rubber film, there's a little hole in there use a torx key or a flat screwdriver and simply tighten the screw.
 
No manual. It moves a lot where the plastic meets the door
e036c9f44c0840025c03ceebfeea6b7c.jpg


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Try to tighten it as apsol said.

Manual are harder to remove, they need to remove the door card to remove.