It depends on your needs. A professional designer can tailor your logo to you, and you get more input on the design process. Plus, if you have an exact image in your mind that you want to use, a professional designer can create it to look how you want without so much trial and error.
As a YouTuber logo maker, PowerDirector can generate a logo simply and instantly. If you’re unsure what you want, you can use it to get ideas or experiment until you’re happy with the result. The app is free to use, and you can keep generating logos in different styles to get one that matches your aesthetic.