HOW CAN I PLAY AN ANIMATION WITHOUT POSEPLAYER

you need an animation state machine which you add the clip to, reference the asm in the new animation and change the interaction to perform your custom animation file, best way is to extract an animation state machine resource and look through it you will see a clip name which will be something like bring_the_lightning_x which references the clip. changing that to your custom clip will make the animation state machine play that clip, a few things to note when working with animation state machines is the title of the asm must be the hash 64 number of that name on the asm. So for example say you had MysticModder_Aetherborn:ASM_Cast_Spell the fnv64 would be
120D06788E9E080D, you would then reference the asm in the animation tuning by changing the ASM part to that, then you have to reference the new animation tuning in the factory/animation_ref part of the interaction. Good luck