As others have said, Savage fights take tons of practice and a fairly good understanding of your job. Have you unlocked the Stormblood Stone Sky Sea dummies yet? They're a good way to practice your rotations and seeing if your DPS is (theoretically) enough to get through a fight before enrage. It's also important to keep up with improving your gear, and melding materia to secondary stats that are important for your job can go a long way if you can do it. Stock up on the best foods you can for your respective stats, and if you can afford it try to get some stat potions too. The fights can get frustrating sometimes while learning, but once you've gotten through each section enough things start becoming muscle memory. And don't be afraid to ask other people who are familiar with the fights and/or your job for advice if you need it! That said, there's no shame if you feel savage content is not for you. But I certainly encourage you to keep trying if you'd like to. You may be surprised to find you're more capable than you think! Best of luck on your endeavors!