The Magento 2 default format of the URL, “sitename.com/admin” is vulnerable to bots. So, it is recommended to change admin URL in Magento 2.
Attachment 13771
Methods to Change Admin URL in Magento 2:
- Via SSH
- Manually
- Via Admin Panel
Read all three methods in detail at https://meetanshi.com/blog/change-ad...-in-magento-2/