Upgrading the sights on your semi-auto handgun is one of the first modifications shooters usually make after purchasing a new firearm. Most factory pistols will come with a set of white three-dot sights, which are adequate, but finer sights are required for precise aiming and more visible night sights are far better for self-defense applications.
But many gun owners think changing sights on their own is something beyond their expertise. Even if you have made an endeavor to do it yourself, you've likely gone down an Amazon.com rabbit-hole of fairly expensive sight-pusher tools that you can't really justify spending over $100 on to use maybe once or twice a year.
There are other options. In this video, Tom McHale shows you how to change the sights on your handgun with tools you probably have right now on your workbench, without marring your new sights or your gun.