Using two VPNs does not necessarily mean you will have double the amount of security from one VPN.
VPNs protect your online privacy by routing your traffic through their servers, stopping others from seeing what you are doing.
Adding an additional VPN introduces another encryption tunnel, but this could cause conflicts trying to route your traffic and could lead to slower connection times.
It can also conflict with having a VPN kill switch function activated on both VPNs at once and you may find you are unable to use the internet with both VPNs active.
It is suggested that having one VPN is enough, and if you want to improve your security and privacy, look at getting a double VPN rather than running two separately.
This won’t slow down your connection time as much and it is usually easier to use and set up.