There is nothing wrong with tutorials, but to really learn coding you have to figure out how to use and apply it yourself and tutorials don't really help with that. You need actual experience messing around
Tutorials usually only scratch the surface of a topic/techology. To improve you need not only practice but a focus in understanding how things work at a deeper level, which is something that tutorials won't really cover
Great to start off with but eventually you'll be dropped in the ocean and you'll realise that what you thought was swimming was actually you just being kept afloat.