There are Marketing/Business majors at many colleges that will not require much “difficult” math. Pick a college you like, go to the Business school’s website, click on a major, and you can see what the required classes are for each major. If you don’t want to improve your math skills enough to become good at Calculus, choose the right major at the right university and you won’t have to learn Calculus.
However, as you search for that school and major, be sure you check the starting pay for graduates of that major at that school. It’s easy to confuse one school’s $55K/yr starting pay for graduates with another school’s $33K/yr starting pay for graduates in a similar-sounding major.
Sometimes, it is worth it to go through the trouble to learn that more difficult class, because it often results in a higher paying job. But it is also very understandable that sometimes, some students don’t want to do that. You’ll have to decide what’s for you.