Option 1 (Let your friends use mcaselector):
* Zip the world folder
* Upload it to google drive
* Send it to your friends
* Tell them to decrease the file size using mcaselector
* Zip the file before uploading to Aternos for lower file size
Option 2 (Use Thanos):
* Use thanos if you know how
* Zip the file before uploading to Aternos for lower file size
Option 3 (Upload parts of your region folders at a time):
* (If you can't do the things above or did the things above but the file size is still higher than the limit, this is for you)
* Go in your world folder, move the region, DIM1/region, DIM-1/region folders to another place
* Upload the world folder
* If any of those folders that you just moved is larger than the upload limit, seperate the folders' content so that each part is lower than the limit, then upload them one at a time