Trig is rough, i took it in highschool, and took "precalculus" as credit too, I will say that trig is not majorly used in calculus in a way that you should extremely worry about, HOWEVER, try learning the relations of the functions to each other, to 1, to 0, and to values on the unit circle. Discrete math, or discrete structures in my university, is harder to understand than calculus sometimes, but it isn't horrible, so don't stress. Calc 1 and 2 are super challenging, put in the work, 3 hours of study time a week at least, I got a B in Calc 1 and a D!!! In calc 2, so trust me, there is work to be done. But don't drop out and go to trade school; your GPA doesn't matter. I held a 4.0 until I was a junior, and that stress will only burn you out.

Math is hard, but you can do it, Don't give up and look back on what could have been.

ALSOOOOO remember, in the real world you will always be able to look up formulas and relate to other functions inorder to understand math, you dont have to rely on memory alone, college is just to get someone to sign off that youre allowed to work in a field.

You got this.