Yaarel
🇮🇱 🇺🇦 He-Mage
Something like the following seems more reasonable.I covered this by saying feat or fighting style.
Anyone who is trained in the Athletics skill (or perhaps the Medicine skill) can increase the base 1 damage of an Unarmed Strike to d4. Then the Fighter class Fighting Style can increase the base damage by two steps, hence from 1d4 to 1d8. With a base damage of 1d8, the strike becomes a reasonable choice of weapons, and comes with additional benefits for those wanting to invest resources in grappling.