Help with FET After a failed transfer

I did a FET with a 4Ab and it stuck for 10 days But my levels were low and then at the third beta they dropped. It was so heartbreaking. I was the happiest person on earth for those 10 days because I thought my dream after 2 1/2 agonizing years was finally realized. Then just to have a chemical pregnancy. I have another embryo waiting that is a five-day hatched embryo. Are those supposed to be better? I don’t know why they didn’t start with that one and they instead started with the 4 A B. They said they were picking the best one. Can you share any information you have about the hatched ones being stronger or more likely to turn into a healthy pregnancy and a healthy baby? I fear that I am nearing the end of my rope. I pray every single day I make wishes every day I go to church every week and pray for this and it is still not happening month after month. I am losing hope.