i just did what aternos did in the yt tutorial,i used dropbox,copied the link,went to options and pasted it on the resource pack thing,i changed the last 0 to 1, turned on Required Resource pack did i do anything wrong?
That's what you need to do for Java Players.
If you want Geyser players to have a resource pack too you have to do some additional steps since Bedrock resource packs work differently.
>>> Check what Kurt posted