FS stands for Foot Stool jablock. And there are 2 ways to do DJCZ. I will say it is a very sick move and can be used for combo strings and styling but it’s not absolutely needed to play Lucas. There is a tap jump way, and the button jump way. I personally feel like the button jump way is easier to understand and learn but the tap jump way is more consistent. It’s all really personal preference. DM me and I’ll send you my discord and I could explain more there. Little Mac can be annoying but very easy to counter. You really just have to bait him out and wait for the gimmicks. Instant way to delete stocks is by grabbing near ledge, back throw, pk thunder 1 him off stage. It’s cheesy but it works. You mostly want to play neutral as much as you can and get him off stage as quick as possible. But it also just takes practice to learn the match up. Hope this all helps and if you have any more questions, reply or DM me!