Is the questioner's not marrying until the age of 37 her destiny, and what are the reasons for not completing an engagement despite suitors coming forward, and what is the reason for her meager sustenance despite working for 17 years?

Marriage and sustenance are predetermined for the servant, as Allah Almighty says: "Indeed, We have created all things with [decreed] measure" and "And everything with Him is by due measure." It is recommended to maintain chastity, uprightness, and to supplicate frequently for a righteous spouse. There is no objection for a woman to offer herself in marriage to someone whose religion and character she approves of, either directly or through her guardian, as Umar did with his daughter Hafsa, and some female companions did with the Prophet, peace and blessings be upon him.