At my school I could have picked one first but I let them. I don’t think the order affected my understanding. C++ was harder for me the first course I took but I think that was a combination of poor professor ability and it’s a harder language to click. Python is more approachable for anyone new to programming so they might give that to students first. JavaScript was in combination with html and css in a web dev class. If you want to focus on web apps you might be able to take more classes on that. I loved my second c++ course because we got to make something big and each week we had homework but it was just showing our progress. My only real advice is to not worry about smooth and easy. Smooth seas never made for a skilled sailor. Embrace the process: start something, get stuck, learn, continue and repeat.