I successfully applied for a job in a company, but I have a better choice. I want to reject my original company. How can I say it without hurting my feelings?

The point is, did you sign it? It is more difficult to sign, and you have to pay liquidated damages. If you don't sign it, talk to him. There is nothing to be ashamed of.

You mainly don't know what reason to find, do you? Just say you have to think about it and think this is not suitable for you. If you change careers, you say you still want to engage in the original industry. Just don't be so specific to him. Everyone knows that. Why should he make things difficult for you?