I am an international student studying in North america. I am applying for a master's program. I reached out to many professors for a letter of recommendation, but none replied. So, I told one professor that I would give him a small coffee gift card just for replying, regardless of whether he said yes or no. I now realize that I should not have done this.
The professor explained that I should never make such an offer and that he could not accept it. Still, he agreed to write the letter. However, he is going to mention this incident in the letter.
Is this gonna give the negative impression to people who review application? If so, should I ask someone else to write for me instead? It is hard to get people to reply to my requests.