How to refuse the job introduced by others and how to be tactful?

There are several ways to politely refuse a job introduced by others: first, thank the other person for his kindness, which is necessary. Then tell each other your current situation. And directly explain that this job is not what you want, and will not consider this job for the time being. Thanks again for your kindness.

Specific reference is as follows

1, thank you for giving me this interview opportunity, but before the interview invitation was sent out, another company had passed my application request and called to ask for employment as soon as possible. ...

I can't consider working in your company for the time being just because your company is not suitable for my career development direction. Thank you for your invitation. If there is an opportunity, we will definitely cooperate again. Thank you. Goodbye.

Thank you for your invitation. I'm not interested in this job, which doesn't suit my personality.

Thank you for your invitation. I used to work in this job, and I want to change my job to experience it. I'm terribly sorry.

5. Home is too far away from work, so it is inconvenient to travel. Thank you for your invitation.