Please note that the bunker does not have a name even in the Wikipedia article.

https://ru.wikipedia.org/wiki/Бункер_Путина#Бункеры

Also re-read the article about bunker_type

https://wiki.openstreetmap.org/wiki/Key:bunker_type

It’s not for me to advise anything, but drawing individual trees from blurry satellite images is a useless task.