Does using different keywords confuse the algorithm? Need help with keywords

(Link to channel in my bio)

Hi everyone! The essence of my YouTube channel is to explore stories about individuals and organizations that have gained success through questionable means. I aim to keep my content as engaging as possible. Currently, I'm at a crossroads with choosing the right keywords for my videos, given their broad spectrum covering various sectors. Common keywords across my channel include "scams" and "fraud," which are apt for the theme but not industry-specific.

For instance, the keywords I used in my latest video include "trading," "stocks," and "stock market," which might not perfectly align with the audience I intend to attract, as those terms usually draw in an audience seeking trading tips or market advice. I'm deliberating whether I should vary my keywords based on each video's content or if I should maintain a consistent set of keywords that aligns with my niche. Thank You