I read over some of your other comments talking about this, and have to say that a Pokemon game is a weird choice. Avoid adaptations of X Popular Thing, and look for original games. It’s in those that there’s stuff to learn from.

You don’t need to agree with every rule from other games, and you don’t even need to change your preferences for 5e. But there’s stuff out there that will serve you as inspiration, and change the way you understand things in the books you’ve read before. Start by looking at games in a similar genre, fantasy, high-fantasy, low-fantasy, swashbuckling, sword & sorcery. You’ll probably find at least one piece of advice or implementation of a rule that will make you understand the hobby/DMing better in every game out there.

When you said officially I imagined you had stumbled your way into becoming an official DM for WotC, running games somewhere in one of their basements, as a job.

As someone who has been a DM for 20+ years, my advice to green ones is that now is the time for you to drop just playing D&D and learn of other pastures, there is a world to explore when it comes to RPGs, or a few. Take a look at some other games/systems, it’ll make you a better DM.