How to politely refuse a blind date?

You can say: you are very kind and have good conditions. I think you can meet someone better than me. If you are suitable to be friends, you can also ask him generously. If you are afraid of embarrassment, you can use social software after the meeting.

Don't hurt your self-esteem when you refuse. Either way, you must do it without hurting your self-esteem. Don't embarrass both sides. After all, the introducer may still be a relative or friend. Hurt each other's self-esteem, not only embarrass each other, but also lead to low quality in leisure.

Don't be ambiguous. If you don't like each other, don't accept each other's gifts, otherwise it will be easy for each other to misunderstand and waste each other's time. Don't be ambiguous.