Gender identity dysphoria can be extremely confusing! You mentioned you haven't told anyone irl but to yourself, & on-line, you're unlabeled & you enjoy that. If you're comfortable with where you're at then there's really nothing to be concerned about & nothing to do. There are many resting places along the gender identity continuum.

However if you're not content to be where you are, then you may want to consider seeing a therapist who is experienced in working with people who have gender identity concerns. (It's important to find someone who is interested in, as well as experienced in working with, people who have gender identity concerns in my opinion. My experience tells me that a therapist who is not can do more harm than good.)

By the way, are you familiar with gender therapist Dara Hoffman-Fox's Youtube channel? Here's a link:

YouTube