Pfsense wireguard natting

Hello all,

I configured a server with wireguard at OVH France on which I have several failover IPs.
At home I installed another debian server with wireguard
it works well because I manage to use wireguard to have a fixed ip at home because my connection has a dynamic ip.
So I bought a netgate device that I installed with the wireguard package and the connection is ok between my netgate and the server at OVH.
I removed the debian at home to use the netgate.
My problem, I don’t know how to do nat to redirect the failover ip to a server behind my netgate.
I don’t know if it’s possible.
If you have an idea or if you can help me, I am ready to reward you for the job.

Many thanks,