It is possible to learn how to edit videos professionally on your own. As a rule, this way is more difficult and longer. The Internet is full of free information - including YouTube. You can find lessons and instructions on any topic if you search well.
You can also start using free video editors while you're learning. For example, I've been training with Alight Motion Mod Apk. It's not difficult for me to use this video editor in my order. Still, sometimes customers ask to perform work in the official versions.