Now you need to decide in which direction you want to work or develop. It can be complex projects in the php language or work with ready-made solutions like as Laravel, Wordpress or others.
The Php language is very widely used today, and you cannot become a professional at all, and even more so right away. Consistent practice is needed. Choose one area and over the years you can gradually expand your area of qualification. Maybe in the future you will realize that the PHP language is not as good as it seemed at the beginning and you will want to choose another language for the backend.