Reasons saying “pray for me” is wrong:
This is a business site, not a religious site. It shows that someone doesn’t have experience in the business world.
It’s a demand. And it’s a demand to strangers that they do something religious.
It shows that someone desperately needs help from whoever they want you to pray to. This should be reserved for when someone has a loved one who is very ill or dying. Even then it is making an assumption that the person is the same religion as they are, and it’s still a demand.
I always wonder when someone says this, do they really expect random strangers to say a prayer for them on demand? It’s extremely offensive, particularly if the person they say it to is a different religion, or an atheist.
I dislike seeing anyone saying “wish me luck” too when it’s on a business site like this one. Luck has nothing to do with success on fiverr.