How many FET did it take for one to stick? Please help

J

I just found out my second one *most likely * failed. Got my beta test results from this morning and technically it was positive but hsg was only 5. 😔 please help me. Did this happen to anyone? I have had two FET transfers with two genetically tested embryos both were 4AB score which they told me was amazing. What is going on. Please help, any advice or similar stories? I’m losing hope again.