#Don't run adventures with character levels mismatched with the recommended, find one that fits what you need
Don't run adventures with character levels mismatched with the recommended, find one that fits what you need
I agree with kviiri's answer, and a lot of what they have said is good advice. I would also strongly suggest not trying to run an adventure when the characters' levels are too high or low, as the whole dungeon will be playtested and balanced to fit what is suggested.
The main reason I have posted another answer is that I wanted to add that with a bit of looking, you can find one-shots designed at almost any level, including level 1 characters. For instance, I recently ran the adventure "The Burning Goblins", which is designed for new players, new DMs, and level 1 characters. It's split into two good separate parts, and easily fits into sessions of 4(ish) hours. There are definitely other adventures that fit what you require as well.