I'v been a main ranger for a while but i'm sick of her and i can't settle on a new class , classes  i'v tried so far : Musa , Mehwa , Tamer , Warrior , DK ( was OK but got bored fast  ) , Witch ( too slow ) , Ninja , Lahn ( movement is fun but fighting is bad ) , Mystic ( burnt out fast )  , Tamer  , Sorceress ( not that great )  . I'm really enjoying the visuals , enhancing system , progression , varety in activities  but when it comes down to fighting it makes me want to drink bleach , i'v taken long breaks from this  , all classes feel the same mostly everyone is melee and there is a minor difference in anything , maybe this game's fighting system is not for me , what do you think ?

Edit : Thx for your answering guys i now play Kuno and she's fun she has very nice mobility and some diversity in skills  .

At the risk of being called an elitist.  You haven't gotten to 61 yet, you are barely out of the Tutorial.  

Roll each one of those classes as a Trial Character, and you will see that with all skill points unlocked they play way differently than they do now, when you only have a few of the skills available.  Each class, but in particular Ranger has many skill combos that just don't show up on skill's description.  

Personally, combat enjoyment is largely dependent upon what enemy my character is facing. When fighting foes they can slay by the handful with just a couple of skills I feel any class's combat will soon become a little mundane. But tough rift bosses, guild boss events, tough world/field bosses and other harder enemies I believe tend to not only reveal the differences between classes more, but also generally make combat with all classes more enjoyable.  So, perhaps go out there and fight some enemies your character's not supposed to be able to defeat at their level/gear-score. Maybe that may add some excitement to battle for you by having to utilise more of the various classes' unique skill sets in order to survive, and in doing so highlight the class differences more.

Now, of course at the end of it all there is no one thing that everyone will agree on that is enjoyable, so perhaps combat just will never be so to you. There is absolutely nothing wrong with that, we're all different. But in such a case, why don't you focus more on the 'variety of activities' you're really enjoying. After all, within reason there is largely no 'right' or 'wrong' way to play the game, just your way.

I myself personally am into melee classes(with a few exceptions) and rarely go for anything ranged/mid-ranged. It's surprising for me, that you like enhancing. Something not commonly seen from my perspective.

But my advise is this: "Play whatever you enjoy the most and dive deep in the class you like the most. Put your own aims and achieve them."

Yeah the combat in this game is rather shallow tbh, but it's a korean grinder, what you expect? Combat is all about gearchecking, as intendeed anyways...

The real-time action combat in this game is easily best-in-genre among all mmorpgs. Its the single reason the pvp community still exists.

You should look into picking up a mentor for your class, either through the class discords or a guild, as well as reading up on all the mechanics. You can start with this: https://docs.google.com/document/d/1q4ErL3e1ccZWSnw5HKLxRgLFrvjMg6UKD7LQDxYrVjM/

Its a little outdated but it'll get the basics across to you.

Not really gear check if u look on the tunier with even gear

As others have suggested, try levelling to 60 with each class atleast. With 60, you should have every Awakening/Succession skill unlocked, unlocking the full combo potential of that class.

The more skills you have at your disposal, especially those Flow skills, the smoother and more fun the combat gets.