Broken Mirror Shard

I recently found a broken mirror shard in a rental property I’ve been living in for a year. It was shaped like a diamond and I found it in my bedroom.

I have noticed other things as well, I’ve had issues with multiple doors and locks and have always had a sense it is cursed, not haunted.

Have you ever come across anything like this or know what it could be?

Thanks.

Asked by Alyssa