General guide to reduce latency

Dont use wireless. Also, dont use wall plug network.
Dont use congested connection(if your cap is 5 mbps, and your utilization is 5mbps, your network is congested.)
Use network with the smallest number of hops in traceroute.
Dont use vpn.

Im not gonna explain why(that would takes pages to explain and nobody would read it. Feel free to google.). Also this guide is for non technical people.