There you go, then. Focus on relearning algebra. I recommend this workbook because it has full step by step solutions and has a short summary of each section. Focus on your weakness and you will make it. I barely passed all of high school math (I’m talking 2-3 points away from failing, every single quarter, every single year) and I’m doing fine now in calculus 8 years later after relearning from the bottom up. You can do this.