Is it possible to connect to 2 Vpn ? I mean, I have two Vpn on my pc and a want a first one to exit the LAN and then a second one to precise the exit country (which I cannot do on the first vpn) if it is possible, how can I do it ?
In theory all you need to do is to setup a route in your OS's routing table so that the second VPN's server IP will be routed via the first one. You may also have to fix the default route after the second VPN is connected.
In reality, whether you can do this depends on the OS and the VPN client. Android for example only support one VPN natively.
You cannot - or at least should not be able to - run 2 VPNs together as this would create a bridge between them which is unlikely to be a wise thing to do and likely to cause a number of networking issues. Even if your VPN works as a virtual network card which might then be possible to join in a bridge to another network, it is still unwise to do so.
I'm not clear that is what you mean though. I think that what you need is a VPN that allows you to get clear of the LAN. The other end of that would be outside the LAN. It is at that point, outside the LAN, that you would need a machine that not only terminated the first VPN but routed onto the second VPN.
To achieve that, you will need either to find a multi-country VPN supplier that you can reach via your LAN. That's more a case of trial and error.
Alternatively, you will need to run up your own PC or router. Or you might be able to find a suitable VPS supplier that allows you to run VPN's.