I want to uninstall Anaconda3 completely.

Let's say you should do what you wrote in the comments.
The title "I Want to Completely Uninstall Anaconda 3" is as follows:

First, the Japanese version of the same information as the reference and other
How do I properly uninstall Anaconda3
■Additional questions:
It appears that the following tasks at the end of the above article have not been performed.Please do more.

• Then uninstall Anaconda from the control panel

Past Virtual Environment Remains in the Start Menu After Reinstalling Anaconda

Then, you can delete the remaining configuration information directory.

• Check the Explorer display menu for File Name Extensions and Hidden Files
• Uncheck "Do not display protected operating system files (recommended)" on the Display Options tab of the Explorer View menu
• After applying it, click Apply to Folder in View Folder

You can usually delete anaconda, jupyter, ipython, pip and other folders with names associated with anaconda, jupyter and python in the following directories:
Please check the subdirectories, file names, file contents, etc. to determine if they are relevant.

C:\Users\username
C:\Users\Username\AppData\Local
C:\Users\Username\AppData\Roaming
C:\ProgramData

For example, you can think of a directory like this.
However, it is not necessarily {existent/related}You are responsible for the deletion.

.cache
.conda
.continuum
.ipynb_checkpoints
.ipython
.jupyter
.keras
.matplotlib
.spyder-py3
anaconda3
library_dir
ContinuumIO
pip
.anaconda
jupyter