It can be intimidating for new Dungeon Masters to run their first Dungeons & Dragons game. Beyond remembering all of the rules, DMs need to tell an interesting story, roleplay multiple NPCs, and keep the players from completely derailing the entire adventure. Thankfully, Dungeons & Dragons Fifth Edition has a number of premade campaigns designed to be less work to run.
7 Easiest (& 7 Hardest) Premade D&D Campaigns for New DMs
Dungeons & Dragons 5th Edition has a number of wonderful pre-made campaigns perfect for new DMs, but others are better left to the veterans.