Baby fighting naps

Hi mummies, my 5mo baby always fight naps. She shows tired cues but when we want to pat her on bed or carry her to pat her, she will cry murder or push away. It takes awhile to calm her down before she falls asleep. Is this normal? How can I help her to go to sleep happily, without struggle? I feel like I’m not doing things right and causing my baby to cry so much 😢