For Google Chrome
Click the three-dot menu in the top-right corner and select More > Clear browsing data.

Choose a time range from the drop-down menu,"All time" will clear all cookies and check the box for Cookies and other site data.
(Optional) Select other data like "Cached images and files" if desired.
Click "Delete Data".

- Go to "Delete Browsing data" and change the time to All Time. Tick the first for boxes and select "clear now"

Incognito
To use a private browser, open a new window or tab in a private mode like Chrome's "Incognito" or Edge's "InPrivate," either by clicking the menu icon (three dots) and selecting the appropriate option or by using a keyboard shortcut.
Common shortcuts are Ctrl + Shift + N for Windows and ⌘ + Shift + N for Mac, or Ctrl + Shift + P for Firefox.