What the f*ck is saber fighting!?

I'm new, I'm pretty good at blaster classes but how the hell do I use a lightsaber?, there's no tutorial or anything, whenever I try to fight someone they either dodge through my attacks or block everything and kill me effortlessly, yet whenever I try block and counter-attack I run out of stamina before I get the opportunity, it's so dumb the way they did it for new players smh.