Lewandowski is overrated. In my opinion, in a team like Bayern, any qualified striker would have about the same performance as him. Compared to the players who have been on the radar in recent years - Benzema, Mbappe, Ronaldo, how many games did Lewandowski "solve" purely on individual skill, contrary to the logic of the game? Unlike the listed players, I can't remember anything striking about him.
Lewandowski is a sniper and the number of good snipers isn't that big in the football world. In each league you barely find a couple. Their performance depends a lot from their teammates assists. Benzema shined once CR7 were out of Real Madrid. Mbappe has extra skills, and definitely Lewandowski doesn't miss once he gets a good opportunity. I don't think he is overrated but don't expect a lot of him if his teammates aren't doing good.