You need to open the Chrome app on your phone to clear browsing cookies:
Click on the three vertical dots on the right side.
Tap on “Privacy and security”
Select “Clear browsing data”
Choose the time range from the drop-down such as the past hour, or the previous day. You can select anyone from the given option.
Only tap on cookies and site data to clear the cookies on your phone. The remaining options should be unticked.
Click on “Clear Data”
Finally, tap on “Clear”