Magento is a dynamic platform that is consistently looking after the needs of their users and evolving accordingly. Magento 2.3/2.4 is an extremely upgraded version of Magento 1.9 with many new features.
From July 2020, Magento will no longer support Magento 1. Now Magento 1 is vulnerable to unprecedented threats. This version won’t have any more additional security patches updated by Magento which will make it an attractive proposition for hackers and put the customers’ data and the whole website for that matter, at risk.