What is the path to sincere repentance after committing the abomination of Zina (fornication/adultery) and losing virginity, and what is the way out of this distress?

You must sincerely repent and commit to hijab and prayer, for marriage is a predestined provision, and through obedience and legitimate means, Allah facilitates what is good. Do not grieve over the men you have missed, for in the treasuries of Allah Almighty there are many others. Be truthful in your repentance and avoid unlawful mixing with men.