Toddler sleep

Hey I tried sleep train my child since the day she was born, but, it never really worked putting her in the crib or just me patting her, the cry would get louder. The only I put her to sleep is my titties not pacifier nor feeding nor any routine. Now, my child is one year 9 months, she still suck my titties until she fall asleep then she would let go and slept through night. I tried the cry out technique, it worked but during the cries, she will start hurting herself and screaming out which I had to put stop to it. Any mum out there who has the same experience as I do? Please i m having a mental breakdown