Earlier today, I asked a question about which programming language I should learn to make mobile game development. There was a comment saying that I should learn Java or kotlin for Android game development. So Which is better? Kotlin or Java?
There is no such thing as better as a knowledgable programmer can make any language work and they all have flaws. The more important question is which language do you like better. You want to use the one that is easiest for you because it fits your programming style. That means you must learn 5 or 6 enough to get by (SoloLearn's courses give you that), practice with them enough to know how you feel about them, get some details on how to use a couple favorites for Android & iOS (play with demonstration programs), and finally select the one you want to start learning in depth.