Winning one more cup in Europe and winning a golden boot in Europa League are not bad for Lewandowski before he ends his career.
Robert Lewandowski is 34 years now. IMO, he has at least 3-4 years of quality football left in him. So it is too early to talk about his retirement. Ronaldo is performing exceptionally at the age of 37. The same can be said about some of the other players such as Goran Pandeev and Luka Modrić. Nowadays, players are able to maintain optimal form well in to late 30s. Lewandowski has scored 13 goals from 14 La Liga matches for Barcelona so far in 2022. That shows the sort of form he is in. And during the previous year, he scored 35 goals from 34 appearances in Bundesliga. 2020 was even better, with 41 goals from 29 matches.
Don't we realize that players who have entered the end of their careers actually show very good performance and even become a mainstay for their team. There are many names on my list, including Lewandowski, Messi, Ronaldo, and many more. Players who have been considered "finished" can still show that they are still worthy of being a mainstay on their team. These players are like saying that "age is not a barrier".