Crying during night time😢

Any tips or guide on how to comfort or what will mummies do when baby starting to cry at late night? I noticed my baby girl will start crying after 12 o'clock late night, no matter how we comfort her, she still don't sleep and when we try to put her back on her bed, she start crying again and then looking around for whole night long! Any guides on for that? Or any mummies having the same trouble like me?