OK so everyone is always asking how to keep my guard from brake all the time. well there's one way to keep your guard from braking in a start of a battle people always jump block right well when you see that happening it means that there guard breakers and they start to air dash you right away so what you can do is block his air dash and then dash right after you block it this is called counter dashing this helps you on wasting the other fighters subs the other player will notice you know how to counter and then that's when you start air dashing him back fast  but there's one about counter dashing that its a 50% chance that your guard will brake just cause now that your counter dasher so it will help out some people just try to time your counter's this will keep you from getting guard break ultimate.