Why is it so easy to get fired for nothing… “You work so well but I don’t see you working here long term”… My boss said.

In 2 weeks I have to find a job… He knows very well that I live alone and I have to pay rent/bills. For real now… This is the second job where I have been told the same thing. He repeated to me countless times that has othing personal with me, but still he made this decision…