Wanted VPN tunnel between elastic ip and on prem static IP?

I'm new to AWS, and I have one Elastic IP on my account that I'd like to use to establish a VPN connection between my on-premises and AWS accounts. I tried setting up an OPNsense firewall instance and connecting my elastic IP to form a tunnel, but it didn't work? I also tried connecting Elastic IP to a network interface, but it didn't work.

I also changed the security groups to allow everything, including all tcp/udp/icmp traffic. I also added routes tables as required.But packet from on prem is ever showed up at aws end.

Is there anything I'm missing?