Feeling down.....how do i liven it up...make it happen

So ladies looking for information in what helped you lucky ladies get pregnant I feel like I'm doing everything wrong.... do u have sex at a certain time how many times a week??? I feel like it just won't happen. I was pregnant later to find out there was a sac and no baby after that I just feel like giving up like I don't want to try anymore so I badly want a baby.....I'm really looking for people to tell me what they did or did anyone spice it up a bit I don't want trying to make a baby becoming a chore of having sex every single night please give me your opinions or advice thank you so much.