Hi there
As you wanted to remove the Adobe Acrobat ribbon but keep the Acrobat tab, please check the steps shown in the screenshot below and see if that works for you:

Regards
Amal
The September 28, 2021 response by the user Amal is incorrectly marked as "Correct," since Amal's response doesn't address the issue this thread raised. The original poster clearly stated (prior to Amal's 9/28/21 response) that they had successfully removed the ribbon icons temporarily only for them to reappear. Amal's response showing how to remove the ribbon icons is thus not useful.
Amal or a moderator should correct the 9/28/21 response and/or remove the "Correct" marking. Adobe charges a hefty price for Acrobat, and part of Adobe's pitch is providing continuous support to subscribers. The least Adobe can do is not prioritize spam and low-value content on threads where users look for help with the software's bugs.