Site to site VPN shows connected but traffic over the tunnel is not reliable.
Dial in VPN IKEv2 will break the internet connection if you have site to site VPNs.
L2TP and WireGuard are design to be used as proxy ( if are setup as in the tutorial) and not to access network devices on the remote site. WireGuard is recommended but no one can ask users to install a new program on their personal computer. L2TP will work most of the time if on the IPSec server user remote network and assign an IP that is outside of the DHCP scope on the remote network. and you will have access to the devices and share drives.
Anybody a better solution?