Path of the Berserker fix

For some barbarians, rage is a means to an end—that end being violence. The Path of the Berserker is a path of untrammeled fury, slick with blood. As you enter the berserker’s rage, you thrill in the chaos of battle, heedless of your own health or well-being.

Based of off of HeartLockHex video

Frenzy

Starting when you choose this path at 3rd level, While raging, you enter a frenzy. In this frenzied rage you are able to make an extra attack whenever you preform an attack once per turn, as long as you are raged.

Mindless Rage

Beginning at 6th level, you gain advantage on wisdom and Intelligence saving throws. you can’t be charmed or frightened while raging. If you are charmed or frightened when you enter your rage, the condition immediately ends.

Frenzied Might

Beginning at 10th level, any melee attack you preformed while in a rage gains an additional 1d6 damage. while raging and melee attack you preform hits, you may expend a hit dice.
rolling it adding what you rolled to the attack's damage while also forcing the target to perform a STR saving throw of DC: 8 + Proficiency bonus + STR modifier, or be knocked prone

Retaliation

Starting at 14th level, when you take damage from a creature that is within 5 feet of you, you can use your reaction to make a melee weapon attack against that creature.