How the heck do you play Free Cell?

I play Microsoft solitaire and I cannot understand the tutorial for free cell it seems. I somewhat understand the game, but the only times I have won is when I randomly clicked cards until I won.

I know the concept is similar to Klondike except all the cards are face up and you have 4 free spaces, but some parts confused me.

If I have a red king on it’s own and that’s it, and in another cascade I have a black queen, red jack, ect all alternating until I get to a 2, why can’t I move that to the king? it won’t let me. I would be able to in Klondike but not in Free Cell. Seems weird. I know I should be able to move it and I can’t and it gets frustrating.
It will let me move a black queen + a red jack to a red king, but more than 2 or 3 cards at a time it won’t let me.

How do I play and what’s a good strategy??