Magento is an open-source e-commerce platform developed by eBay. It is available to download for free, but note that it will not include premium features or technical support. You should also be aware that because Magento is open-source, your website could be at risk of security issues because you are hosting the software yourself.
If you are looking for a more reliable Magento hosting solution, you could consider hiring a professional eCommerce developer. This would involve the expert configuring your site for you and making sure that it is secure.