1: (THE PROBLEM) The problem is not being able to add addons, most of the time it is on a screen that says "import in progress" but it never matters
2: I found out that Minecraft creates a folder inside the addon folder written ".zip" and during the "import in progress" screen this ".zip" folder starts to "weigh" fill with files that are not part of the addons, in point that an addons that weighs 1.5mb weighs GB many GB, and only this ".zip" folder created by Minecraft that weighs GB as it spends time in the loading screen "import in progress"

3: the addons I tried to put all work normally in the offline world