This surprises many people. The official Doraemon Latino YouTube channel and the Doraemon Spain channel uploaded several capitulos completos for free during 2021 as promotional material.
Use watchlists on JustWatch (filter by Doraemon + your region) to see exactly where the 2021 episodes live legally today. Avoid sketchy websites promising "complete nuevos" – the official sources have finally caught up. doraemon capitulos completos nuevos website 2021