

Do a ping of 8.8.8.8 from your user, then open a new console and run tcpdump -i <interface> with first your uplink, then wg0. The packets should be seen on wg0 if they’re routed correctly and the problem then is on the vps side. Otherwise it’s a problem on your local config.
Try
sysctl -w net.ipv4.conf.all.rp_filter=2
on the PC (not vps) or =0 if that doesn’t work