How to lower your ping: 8 fixes that work

Short answer

Use a cable, pick the closest game server, stop other devices from using the connection, turn off VPNs and fix bufferbloat. These help far more than a faster plan, because ping is about delay, not speed.

Eight fixes, from easiest

Pick the nearest server. In the game or app, choose the region closest to you. Distance is a large part of ping.
Use a cable. A cable is usually lower and steadier than Wi-Fi. See Wi-Fi vs Ethernet.
Pause other traffic. Downloads, updates, cloud backups and streams on other devices fill the line and raise ping.
Turn off the VPN. If you do not need it, switch it off while you play. See does a VPN slow down your internet.
Check bufferbloat. If your grade is C or D, follow the bufferbloat fixes.
Improve Wi-Fi. Move closer to the router, or use 5 GHz. See 2.4 GHz vs 5 GHz.
Restart the router and modem. Switch them off for about 30 seconds. Update the router firmware too.
Close background apps. Cloud sync, game launchers and browser tabs can use the connection without you noticing.

What does not help much

A faster plan. More Mbps does not shorten the trip to the server.
"Ping booster" software. It cannot make the distance shorter. At best it picks a different route, which can help or hurt.

Test after each change

Change one thing, then run the SpeedUp test again and compare the ping. That shows which fix worked.

When to call your provider

If the ping is high even on a cable, with nothing else running, at several times of day, note the results and contact your provider. See why your internet is slower than you pay for for a fair test.