Helppp🙄

Hello I would like to get pregnant but they are irregular, before it was regular, but with the contraceptive pills my periods became irregular, and then I have been trying for 6 months but I did not get pregnant, and I do not know why I did not get pregnant I do not know if it is because I do not know well My ovulation days but I have already downloaded thousands of apps and I try to do it that same day that it indicates and I do not try to grant anything 🙄 I don't know if someone can help me knowing which days are the days that I ovulate. I will upload a photo of my previous periods