Juvia is one fucked over character. Her first fight she lost because she needed to be implemented into the story and start her journey to becoming a redeemed character, member of Fairy Tail and Gray's love interest. Next she was made to sacrifice herself against Fried so that (1)

Mira could finally get her chance to shine and show us what she was all about. After that she keeps getting robbed and robbed again by either having to fight side by side with Gray or just having limited screentime when it comes to her battles (2)

DONT EVEN FUCKING GET ME STARTED ON THE NAVAL BATTLE PLEASE FOR THE LOVE OF GOD. She lost even though she was literally in her element (isn't she supposed to be stronger when surrounded by water?) because we needed another reason to hate Sabertooth

Her fight against Keyes. I'm tired of people shitting on her for this fight because she beat the "weakest" demon. Are you all forgetting the fact that no one else stood a chance against Keyes because of his magic except for Juvia? He was made to be the weakest because he (3)

Lacked raw strength but he more than made up for that with his magic, his magic was OP asf and no one else's magic except for Juvia's was able to counter it. After that we only see her getting fucked over again by having to watch her go up against rookie wizards (4)