Yes. Yamal and Lewandowski are two pillars of Barcelona's attack. Together with Raphinha, Barcelona owns the top 3 scorers in the top 5 European leagues this season. This season, fans are all too familiar with Barcelona's invincible image.
And the bad news again, this time not only Lamine Yamal but also Lewandowski. Based on the latest news from Barcelona update, Lamine Yamal is certain, he will be absent for approximately 2 or 3 matches, due to a grade 1 high right ankle sprain.While unfortunately, Lewandowski also suffered a lower back injury, although fortunately not too severe. But at least he will be absent for approximately 10 days. They are both the same, in the next few matches, Barcelona will be in a pretty precarious position without their two key players.
Source: FC Barcelona update injury
If looking at it from a positive perspective, Yamal and Lewandowski's injuries are sometimes a good thing for Barca. Both have been playing continuously recently. The absence from the national team has given Lamine Yamal and Robert Lewandowski more time to rest and recover, which is essential before entering the important stage of the season. Without enough rest time to recover, the risk of them suffering other, more serious injuries is entirely possible.
But I doubt if this is the script they wrote to keep their key players safe. They can still focus on the national team. In any case, the brief absence of Yamal and Lewandowski also created opportunities for substitutes Ferran Torres, Ansu Fati, or Toni Fernandez to show themselves. This will be a good opportunity for the coach to use other players in the squad and test new tactics.