It’s completely legal to use a proxy server. Proxies have multiple uses, like facilitating remote work, establishing a support system for users who are placed outside a particular network, guarding networks and Internet users against wicked content, running online content from abroad, etc.

Many people use free proxies obtained from the Internet; in fact, most people who use proxies probably use free proxies.
Free Proxies provide weak protection for target servers that know your IP address. It is obvious to the observer that you are using a proxy, so they cannot offer protection against adversaries who might observe your traffic.
On the other hand premium proxies add an important layer of protection to your computer. They can be configured as network filters or firewalls to protect your computer from online threats such as malware. In addition, this increased security is beneficial when used in conjunction with a secure web gateway or other email security products.
What is the best place to find a proxy server?
You are still curious where you can find a reliable proxy server. Then you are lucky because I have provided you with security. The proxy server can be used for specific websites, such as Roxlabs.which provides free proxy testing as low as $3 / GB, and has the highest quality residential proxy service in the world.