Birthday is a day which has special meaning for the person and the loved ones related to the person. It is the day which allows the relatives, family, and friends to express the love they cherish for the person. Happy birthday wishes are a feeling that our loved ones need our presence rather than presents and we should always spare time for them at least on their special day.
Listed below are a few samples of messages/wishes for birthdays.
https://medium.com/@s.sourabhsjjoshi/happy-birthday-wishes-to-student-4dbf595c6e56#:~:text=May%20God%20bless%20you%20with,success%20shall%20always%20accompany%20you.
https://www.huffpost.com/entry/23-birthday-wishes-for-friends-best-friend-happy_b_59a74b41e4b096fd8876c06a