You should learn better tactics.
If you fail to shoot, (or will fail to shoot), are you using Counterattack?
You should try starting an attack with a Magnum shot instead of regular ranged shot.
If your total level is 18, maybe you shouldn't play with Black/White Wolves yet. Maybe they are too strong?
There are archer guides in Youtube that can help you out.
Or the guide section of this forums.
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Beginners Ranged Guide