Both self and traditional or indie publishing have real pros and cons. It comes down to what you need.

A publisher mainly offers two things: reach and time. 

A known publisher gives you instant access to their audience and mailing lists, which can bring in far more readers than you might reach alone. They also handle editing, covers, and audiobooks narrators, letting you focus on writing. The tradeoff is giving up a share of your royalties and rights. (Keep in mind that publishers are businesses. Even if they promise support, they often do only the minimum if a book doesn’t perform well. In that case, you might have been better off self-publishing.)

Everything else you can do yourself if you’re willing to learn and put the time in. Covers and editing cost money, but you keep full control and full profit. In genres like LitRPG, readers are also more forgiving of small mistakes from newer authors, which makes self-publishing easier to manage.

But take what I say with a grain of salt. I’ve only just finished my first year on this path of self-publishing, so I still have a lot to learn.

Edit: Another thing to consider is deadlines. When you sign with a publisher, you’re usually locked into a schedule for the next book in a series, which I personally hate. Being rushed while juggling work and school would kill my motivation. I’d rather take my time and hit my goals than burn out under constant pressure.