Adding on stuff that Naiad didn't mention:
First clicking with your mouse is pretty suboptimal, I'd suggest putting some time into getting used to clicking with your keyboard exclusively. Once you are used to using your keyboard then you can make a decision on which style you want to move forward with. In the end this game is all about comfort, so what you find the most comfortable will probably be what you will do best with. However, if you don't really have a preference, then using your keyboard will probably be better especially as patterns get harder and your movements have to become faster and more precise. If you were wondering, I think the best mouse-only players are around high 4-digit to low 3-digit, so it's not like you can't get good at clicking with your mouse, but they are nowhere near top players (an then there's siina clicking with both mouse and keyboard, he honestly scares me).
I'd also suggest trying out tablet as well, if it's a screenless one. The earlier on you try out tablet the faster you can get to your current skill level with it, so if you were to wait until you were a lot better, it'll take longer to learn, maybe even several months. Once you've gotten used to tablet then you can again make a decision if you want to play with mouse or tablet moving forward depending on what you find more comfortable/easy. Unlike what you click with, the difference between tablet and mouse isn't that significant, so just go with whatever you prefer.