I want a positive reaction from a donation I'm going to make.
What'll happen if you don't get your reaction?
I will be very upset and annoyed.
People will see you as attention seeking if you set out do to charity for a reaction. Usually, people donate out of the goodness of their hearts and expect others to do so as well.
I don't care about the donation as much as the reaction.
If that is how you feel, then you should do other things besides donating. There are many other ways to get a reaction you need like making a post on social media or making a video.