You can apply for any diploma medicine related courses offered in KMTC. For instance, Clinical Medicine, Medical Laboratory sciences, Radiography and Imaging, Pharmacy, etc. However, you must have C (plain) in Physics since they require C (plain) in either Maths or Physics.
Here is a complete list of all the courses offered in KMTC and their requirements: https://kmtc.ac.ke/wp-content/uploads/2020/02/KMTC-Programmes-Courses-Feb-2020.pdf
Alternatively, consider doing any degree course that is not related to medicine and which Maths is not a requirement.