I can't take damage or deal damage

Tengo la versión 1.21.0, incluso jugando solo o con un amigo no puedo recibir daño ni causar daño. No recibo daño de mobs, de caídas, de ahogamiento o de ser golpeado por un amigo, noto que solo recibo daño de pociones. And this happens to me without using tricks in survival
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Translation:
I have version 1.21.0, even playing alone or with a friend I can't take damage or cause damage. I don't take damage from mobs, from falls, from drowning or from being hit by a friend, I notice that I only take damage from potions. And this happens to me without using tricks in survival.