I got dropped for the first time.

I don’t know what happened. My employer texted me saying that the parent is “going a different direction” with tutoring and that I will no longer be having them. I feel like I did everything right though. I regularly texted the mom,left work for the kids when I was gone (their request),made sure the kids understood everything and hell one of the kids got a 80 on their most recent test. Where did I go wrong? Was it because I didn’t come in one time (which I informed the mom about and it was because someone near me got COVID so I didn’t want to risk anything). I don’t know but now my income is gone and I need money. Tough days man.