Have you struggled with precalc three times, or did you start with calc 2, didn’t pass, moved down to calc 1, struggled there too, and now you’re trying precalc? Math is a subject where each concept builds on the previous one, and if you don’t have a strong base, it can be really challenging. However, that doesn’t mean you can’t get better at it. Have you really used all the help you could get, like going to office hours, getting a tutor, or other resources? If you haven’t tried these options, I’d suggest giving it another go.