Hello, I am an aspiring DM. I’ve been playing D&D for the last year in a campaign, and my DM has challenge me to run a one shot. I was wondering if anyone had any pointers on a good one shot to run as a newbie DM?. I’ve debated running a homebrew version ( I really wanted to tell a Jurassic park story) but for my first time DMing and still being relatively new to the game, it feels a little scary to do that. I don’t wanna get overwhelmed and then hate it and never wanna DM again.  

Any suggestions?  
( I have the 2024 DM & players handbook. I also have the 2014)

Pad of graph paper,  and 5 room dungeon format should work fine ore you could look at some one page dungeons.

Find a published one shot. There's a handful of free ones on dmsguild.com

Wild Sheep Chase and Bard Outta Hell to name a couple.

There should also be some free ones on DND beyond if I'm not mistaken? Prisoner 13 and the new Scions of Elemental Evil? You could try searching the site