In start, you should be focusing on one language until you get comfortable with it properly. Some first-year students try to learn more and more languages rather than focusing on one and end up learning none. Remember, It’s not that hard to switch to another language if you are good at one. But if you will try to switch frequently, you won’t remember the syntax of anyone and no one is going to ask you how many languages you know. Even you just need one language to clear the coding round of any company. They want to see your problem-solving skills, not your memorization power.