Just wondering if there are any map maker things online that don't autogenerate the map, but one's that let you control the dimensions & room layout, etc. I don't need it to be in color or anything, and it's alright if there's not an app or anything that does that.

Thanks in advance for your help:)

You'd be shocked how many options come up if you Google "D&D map creator."

https://arcaneeye.com/dm-tools-5e/dnd-map-makers/

Quote from Nothic2SeeHere >>

Does this help? It's a generator, but the maps look nice and you can get pretty specific. Here's a link to another dungeon generator that gets even more specific.

 

 I have also used donjon a lot, for world maps, and smaller dungeon maps. 

Thanks to all of you guys:) I think (think being the key word) I'm gonna go with DungeonScrawl, but I would never have found it without you guys, thanks again for all the help!

(I have a habit of thanking people again and again in case you didn't notice.)