It is still possible to grow in a crowded space, but you have to give people a reason to choose your channel over the bigger ones. Covering the same topics is fine, but your angle, your examples, or even your style of explaining things has to feel different. Some viewers prefer a smaller creator who explains things simply over a big channel that moves too fast. The question is not really about the size of the space. Is the way you explain or present things enough to stand out on its own?