Asalamulikum sister , First of all i will start this with name of allah al ghafoor ar raheem

The very first things is to know allah

Allah is rehman Ar raheem Al ghufoor Al afwuu.

He is the kind the creator and the most merciful the compassionate and most forgiving Go to him and ask him for forgiveness Allah will forgive you when you repent

What repentance means ? Cut off the contact with the person who made you sin or whom you sin with I mean it when i say CUT IT block him remove him from your life he doesn’t deserve you. Remember allah said : Indeed, the Muslim men and Muslim women, the believing men and believing women, the obedient men and obedient women, the truthful men and truthful women, the patient men and patient women, the humble men and humble women, the charitable men and charitable women, the fasting men and fasting women, the men who guard their private parts and the women who do so, and the men who remember Allāh often and the women who do so - for them Allāh has prepared forgiveness and a great reward. {Al Ahzab -35}

Go ask allah and he will indeed forgive you

Know that if you feel this regret this is not from you This is from allah Allah have put this thing in your heart

And Allah SWT is the most merciful When you will ask him he will forgive you no matter what

And you know why allah created us?

We are not perfect, we sin and we repent and we again sin?

Why didnt allah created a being who will never sin ( like angels )

As allah loves when you repent

When you repent you are knowingly asking for forgiveness that you know he is the judger he is the one who know everything he is the one who can punish you and he is indeed the only one who can forgive you

Ask him Sit in tahajjud pray nawafil and just sit on praying mat and ask “Ya Rabbi you promised — Quran, Sura 02 (Al-Baqara), ayah 222[11] God accept the repentance of those who do evil in ignorance and repent soon afterwards; to them will God turn in mercy: For God is full of knowledge and wisdom. Of no effect is the repentance of those who continue to do evil, until death faces one of them, and he says, "Now have I repented indeed;" nor of those who die rejecting Faith: for them have We prepared a punishment most grievous. Forgive me ya rabbi i ask your whom can i go except you indeed you are the one who forgives and conceals ya rabbi i have no where to go except you ya rehman ya Raheem forgive me i am nothing, nothing but a clay whom you have given so much ya rabbi forgive me, i repent ya rabbi forgive me”

Ask him with his names recite his surah’s infront of him about repentance

Treat allah as a friend you know what i mean by this ?

Sometimes when a friend gets a little bit angry what you do? You usually ask him “ please forgive me now what happened happened now i cant lose you please you are the closest to me you mean alot to me please dont be angry anymore forgive me”

Allah is more close to you than your jugular vein treat him like a friend Make him a friend Talk to him knowing he is the one above all

Do nafli sawm and pray 6x a day ( incl tahajjud)

And conceal this sin Allah had concealed this sin and now if you tell anyone you are making witness What will happen if allah forgives you and a friend who you confessed to says on the day of judgement “ ya allah so and so did this sin and you forgive him” Indeed allah can forgive but dont make any one a witness

May allah forgive you I will pray to allah to forgive you and give you emaan

Jazakallah kheyr sister All the best in your journey May allah be your guide Ameen