Swaxe is a weapon I don't really play a whole lot. I don't really really like the moves and some of the cancels use really narrow windows that don't click in my head.
Aerial moves on IG basically do like 20% of the damage of other ones. It's awful. Most of the time you spam this one short combo that's basically Y+B>B>B and it does a good chunk of damage(requires red buff but white buff helps)
Basically every gun in World has a different recoil rate with different shots and also needs to stack different amounts of recoil reduction mods onto it to get it down so you can fire continuously. Good Guns are the ones that need as few of these as possible so you can put more damage boosting mods. This is the case for both LBG and HBG. Generally speaking you will maintain 1 gun per shot type(Spread is most mainstream shot type but in some matchups Pierce is close or as good. Normal is somewhere in the middle) but if you really hit it off you can fiddle with others like having a rapid normal 2 LBG build with the Taroth Support gun and a rapid normal 3 gimmick build using the Raging Brachy gun. some of them can do some nutty shit.
Charge Blade's moves are worth sorting out tho. and make sure when you hit endgame post-safi you start looking into elemental. easiest way to rack up elemental weapons is to do kulve for kjarr weapons, and the safi armor is just too good to use as a flexible armor set.
I did this to the final boss of Iceborne, event quest version. Taking advantage of element on CB, and on the right fight? Dumps massive bursts of damage on things.