Need advice for previous employment cirstance?

I would be honest about the fact that you were let go. If you say that you left for personal reasons and they find out it's not true it will look very bad. Just tell them that you were let go because your manager did not feel you were a good fit for the company. Tell them that you had no complaints about your work product and that no performance issues were brought to your attention as the reason that you were let go.