Should I get the Dungeon Master’s Guide, the Player’s Handbook, or the Monster Manual? [duplicate]


So I’m a fairly new player in the game Dungeons & Dragons (D&D). I’m known about the game/played a very loose version of the game a little over a year ago and I started getting serious about ten-eleven months ago. Currently, I am still learning about the game, its concepts, and how to play. Something I would love to try is DMing. But there are a few problems with that:

  1. I’m still not a master at the game and I’m still learning
  2. I’m not sure if I have all the resources.

So I’m asking you guys! What would be the most important to get for an inspiring world builder and D&D player? The Dungeon Master’s Guide, the Player Handbook, or the Monster Manual? I currently have some beginner level stuff that just teaches you the basics, but what if I want to go deeper?