Its super easy, if it looks more confusing than it should, feel free to buy it directly from adobe website.Well, if you are here to clarify instructions...
1. Extract what archive?
2. Rename what folder? (Is this necessary?)
3. By setup do you mean 'Acrobat_DC_Web_WWMUI '?
4. By update file do you mean 'AcrobatDCUpd1901020098'?
5. The "Activation" is a zipped file, that includes two more zipped files. Do I then unzip those two? You stated to "use activator", which is very broad when considering there are two zipped files within in a zipped file.
6. This seems more confusing than it should.