I found this website online called:
https://donjon.bin.sh/5e/dungeon/
And i just wanted to post about it beceause i have a high opinion of it. Its just a webpage that will generate a dungeon layout for you. select party size and level and prefered dungeon size.
Different shapes and designs and the site also fills it with creatures and traps.You can always print off the dungeon layout and fill it with your own things aswell i spose but if youre in a rush and just want a thrown together generator. Thats a really good one.