Okay, so imagine you are trying to do something, like building a Lego castle. When you build the castle really well, using all the right pieces and following the instructions carefully, you are building it competently. Being competent means you are really good at doing something, and you do it in the right way.
For example, when you tie your shoelaces all by yourself without any help, you are doing it competently. It means you are able to do it well and correctly. Or when you read a book out loud without making many mistakes, you are reading competently.
Another way to think about being competent is like being a superhero who knows exactly how to use their superpowers to save the day. When they use their powers in the best and most effective way, they are using them competently.
So, when you do something competently, it means you are doing it really well. You are doing it the right way, and you know what you're doing. It's like being a master at something, whether it's building a Lego castle, tying your shoelaces, reading a book, or using superpowers!