Hello I was wondering if there is a mod that changes the normal attacks to like slashing the enemy with your sword then like spin and hit him and like jump in the air and attack him kind of thing. Sorry if i'm not explaining it well.

Browse the "Animations" category at TES Nexus? You can order the results any way you like (by downloads or endorsemants, descending, for example).

Alternatively, you could try something like Deadly Reflex, which not only features a lot of combat animations, but things like gore and beheadings too - if that's your cuppa.

You can try also unnecessary violence, which adds things like real dual wielding (I mean, you can attack with both weapons with different keys).

Try out Deadly Reflex, it's great.