Generally speaking, free VPN is not recommended.
Because free VPNs are not safe. They may not provide sufficient encryption protection, or spy on the user's privacy, or the speed is very slow.
If you want to find a Free VPN, there are several free VPNs that are good.

such as:

1, Hide.me Free VPN – 10 GB of free data per month
2, TunnelBear Free VPN – Free Servers in more than 22 countries
3, Windscribe Free VPN – 10 GB of free data per month
4, Hotspot Shield free VPN – 15 GB / Month, Free servers in 15 countries
5, Proton Free VPN – Unlimited Free Data

These are good free VPNs. You can try it.

Hope it helps you.