Cloud VPN option

So as part of networking degree i have been tasked with setting up a Site-To-Site VPN with the others in my team.
I have a home lab with 2x 2800 Cisco Routers running over NAT.

Initially we were looking for a Cloud VPN/Router to enable us to connect all the devices together and allow routing between them but have struggled to find a solution thus for as from what i can see the 2800 will only doing ISAKMP and the services i have found all run IKEV2

Anyone able to point me in the right direction or a possible solution ?

Thanks