The concept of free VPN for Roblox sounds very good- and it can work. However, the free services can be associated with conditions: reduced speed, restricted locations of servers, or quotas. In the case of one with Roblox, ensure that it has a relatively good performance, multiple regions, and non-logging policy to ensure the safety. You can go free when you want to reach out to your friends overseas or avoid region blocks without paying a penny but do your research before doing it or you may compromise your performance or security.