How do I Increase Vanilla Arrow Damage?

I don't know about coding, but doing it without it is kinda difficult. The only way i found is using the "deal damage" procedure block, but that adds more invulnerability frames and the mobs damaged no longer take knockback. But you can use the "amount" dependency provided from the "Entity attacked" global trigger, that dependency has the damage value stored in it. You should make a procedure where the target is the enemy and the immediate source entity is the arrow, then deal the damage and do the maths using the amount dependency. For example multiply the amount by 2 and deal that number of damage, if you want for example Arrows that deal double damage